Vaccines

The Food and Drug Administration has clarified its guidance on administration of the Pfizer/BioNTech COVID-19 vaccine, stating that it is safe for people with any history of allergies, but not for those who might have a known history of severe allergic reaction to any component of the vaccine.

The warning is included in the FDA’s information sheet for health care providers, but questions are arising as to whether the vaccine – which was authorized for emergency use by the FDA on Friday – should not be given to anyone with a history of allergies.

Sara Oliver, MD, an epidemic intelligence service officer with the Centers for Disease Control and Prevention reported at a Dec. 11 meeting of the agency’s Advisory Committee on Immunization Practices that two U.K. health care workers with a history of significant allergic reactions had a reaction to the Pfizer vaccine. A third health care worker with no history of allergies developed tachycardia, Dr. Oliver said.

“I want to reassure the public that although there were these few reactions in Great Britain, these were not seen in the larger clinical trial datasets,” said Peter Marks, MD, PhD, director of the Center for Biologics Evaluation and Research at the FDA, during a press briefing on Dec. 12.

The Pfizer vaccine “is one that we’re comfortable giving to patients who have had other allergic reactions besides those other than severe allergic reactions to a vaccine or one of its components,” he said.

Dr. Marks suggested that individuals let their physicians know about any history of allergic reactions. He also noted that the federal government will be supplying vaccine administration sites, at least initially, with epinephrine, diphenhydramine, hydrocortisone, and other medications needed to manage allergic reactions.

The FDA is going to monitor side effects such as allergic reactions very closely, “but I think we still need to learn more and that’s why we’re going to be taking precautions. We may have to modify things as we move forward,” said Dr. Marks.

Dr. Oliver said that on Dec. 12 the CDC convened an external panel with experience in vaccine safety, immunology, and allergies “to collate expert knowledge regarding possible cases,” and that the FDA is getting more data from U.K. regulatory authorities.
 

Pregnancy concerns

Agency officials had little to say, however, about the safety or efficacy of the vaccine for pregnant or breastfeeding women.

The FDA’s information to health care professionals noted that “available data on Pfizer-BioNTech COVID-19 vaccine administered to pregnant women are insufficient to inform vaccine-associated risks in pregnancy.”

Additionally, the agency stated, “data are not available to assess the effects of Pfizer-BioNTech COVID-19 vaccine on the breastfed infant or on milk production/excretion.”

Dr. Marks said that, for pregnant women and people who are immunocompromised, “it will be something that providers will need to consider on an individual basis.” He suggested that individuals consult with physicians to weigh the potential benefits and potential risks.

“Certainly, COVID-19 in a pregnant woman is not a good thing,” Dr. Marks said.

An individual might decide to go ahead with vaccination. “But that’s not something we’re recommending, that’s something we’re leaving up to the individual,” he said.

A version of this article originally appeared on Medscape.com.

The Food and Drug Administration has clarified its guidance on administration of the Pfizer/BioNTech COVID-19 vaccine, stating that it is safe for people with any history of allergies, but not for those who might have a known history of severe allergic reaction to any component of the vaccine.

The warning is included in the FDA’s information sheet for health care providers, but questions are arising as to whether the vaccine – which was authorized for emergency use by the FDA on Friday – should not be given to anyone with a history of allergies.

Sara Oliver, MD, an epidemic intelligence service officer with the Centers for Disease Control and Prevention reported at a Dec. 11 meeting of the agency’s Advisory Committee on Immunization Practices that two U.K. health care workers with a history of significant allergic reactions had a reaction to the Pfizer vaccine. A third health care worker with no history of allergies developed tachycardia, Dr. Oliver said.

“I want to reassure the public that although there were these few reactions in Great Britain, these were not seen in the larger clinical trial datasets,” said Peter Marks, MD, PhD, director of the Center for Biologics Evaluation and Research at the FDA, during a press briefing on Dec. 12.

The Pfizer vaccine “is one that we’re comfortable giving to patients who have had other allergic reactions besides those other than severe allergic reactions to a vaccine or one of its components,” he said.

Dr. Marks suggested that individuals let their physicians know about any history of allergic reactions. He also noted that the federal government will be supplying vaccine administration sites, at least initially, with epinephrine, diphenhydramine, hydrocortisone, and other medications needed to manage allergic reactions.

The FDA is going to monitor side effects such as allergic reactions very closely, “but I think we still need to learn more and that’s why we’re going to be taking precautions. We may have to modify things as we move forward,” said Dr. Marks.

Dr. Oliver said that on Dec. 12 the CDC convened an external panel with experience in vaccine safety, immunology, and allergies “to collate expert knowledge regarding possible cases,” and that the FDA is getting more data from U.K. regulatory authorities.
 

Pregnancy concerns

Agency officials had little to say, however, about the safety or efficacy of the vaccine for pregnant or breastfeeding women.

The FDA’s information to health care professionals noted that “available data on Pfizer-BioNTech COVID-19 vaccine administered to pregnant women are insufficient to inform vaccine-associated risks in pregnancy.”

Additionally, the agency stated, “data are not available to assess the effects of Pfizer-BioNTech COVID-19 vaccine on the breastfed infant or on milk production/excretion.”

Dr. Marks said that, for pregnant women and people who are immunocompromised, “it will be something that providers will need to consider on an individual basis.” He suggested that individuals consult with physicians to weigh the potential benefits and potential risks.

“Certainly, COVID-19 in a pregnant woman is not a good thing,” Dr. Marks said.

An individual might decide to go ahead with vaccination. “But that’s not something we’re recommending, that’s something we’re leaving up to the individual,” he said.

A version of this article originally appeared on Medscape.com.

The Food and Drug Administration has clarified its guidance on administration of the Pfizer/BioNTech COVID-19 vaccine, stating that it is safe for people with any history of allergies, but not for those who might have a known history of severe allergic reaction to any component of the vaccine.

The warning is included in the FDA’s information sheet for health care providers, but questions are arising as to whether the vaccine – which was authorized for emergency use by the FDA on Friday – should not be given to anyone with a history of allergies.

Sara Oliver, MD, an epidemic intelligence service officer with the Centers for Disease Control and Prevention reported at a Dec. 11 meeting of the agency’s Advisory Committee on Immunization Practices that two U.K. health care workers with a history of significant allergic reactions had a reaction to the Pfizer vaccine. A third health care worker with no history of allergies developed tachycardia, Dr. Oliver said.

“I want to reassure the public that although there were these few reactions in Great Britain, these were not seen in the larger clinical trial datasets,” said Peter Marks, MD, PhD, director of the Center for Biologics Evaluation and Research at the FDA, during a press briefing on Dec. 12.

The Pfizer vaccine “is one that we’re comfortable giving to patients who have had other allergic reactions besides those other than severe allergic reactions to a vaccine or one of its components,” he said.

Dr. Marks suggested that individuals let their physicians know about any history of allergic reactions. He also noted that the federal government will be supplying vaccine administration sites, at least initially, with epinephrine, diphenhydramine, hydrocortisone, and other medications needed to manage allergic reactions.

The FDA is going to monitor side effects such as allergic reactions very closely, “but I think we still need to learn more and that’s why we’re going to be taking precautions. We may have to modify things as we move forward,” said Dr. Marks.

Dr. Oliver said that on Dec. 12 the CDC convened an external panel with experience in vaccine safety, immunology, and allergies “to collate expert knowledge regarding possible cases,” and that the FDA is getting more data from U.K. regulatory authorities.
 

Pregnancy concerns

Agency officials had little to say, however, about the safety or efficacy of the vaccine for pregnant or breastfeeding women.

The FDA’s information to health care professionals noted that “available data on Pfizer-BioNTech COVID-19 vaccine administered to pregnant women are insufficient to inform vaccine-associated risks in pregnancy.”

Additionally, the agency stated, “data are not available to assess the effects of Pfizer-BioNTech COVID-19 vaccine on the breastfed infant or on milk production/excretion.”

Dr. Marks said that, for pregnant women and people who are immunocompromised, “it will be something that providers will need to consider on an individual basis.” He suggested that individuals consult with physicians to weigh the potential benefits and potential risks.

“Certainly, COVID-19 in a pregnant woman is not a good thing,” Dr. Marks said.

An individual might decide to go ahead with vaccination. “But that’s not something we’re recommending, that’s something we’re leaving up to the individual,” he said.

A version of this article originally appeared on Medscape.com.

In mid-November, Pfizer/BioNTech were the first with surprising positive protection interim data for their coronavirus vaccine, BNT162b2. A week later, Moderna released interim efficacy results showing its coronavirus vaccine, mRNA-1273, also protected patients from developing SARS-CoV-2 infections. Both studies included mostly healthy adults. A diverse ethnic and racial vaccinated population was included. A reasonable number of persons aged over 65 years, and persons with stable compromising medical conditions were included. Adolescents aged 16 years and over were included. Younger adolescents have been vaccinated or such studies are in the planning or early implementation stage as 2020 came to a close.

These are new and revolutionary vaccines, although the ability to inject mRNA into animals dates back to 1990, technological advances today make it a reality.¹ Traditional vaccines typically involve injection with antigens such as purified proteins or polysaccharides or inactivated/attenuated viruses. mRNA vaccines work differently. They do not contain antigens. Instead, they contain a blueprint for the antigen in the form of genetic material, mRNA. In the case of Pfizer’s and Moderna’s vaccines, the mRNA provides the genetic information to synthesize the spike protein that the SARS-CoV-2 virus uses to attach to and infect human cells. Each type of vaccine is packaged in proprietary lipid nanoparticles to protect the mRNA from rapid degradation, and the nanoparticles serve as an adjuvant to attract immune cells to the site of injection. (The properties of the respective lipid nanoparticle packaging may be the factor that impacts storage requirements discussed below.) When injected into muscle (myocyte), the lipid nanoparticles containing the mRNA inside are taken into muscle cells, where the cytoplasmic ribosomes detect and decode the mRNA resulting in the production of the spike protein antigen. It should be noted that the mRNA does not enter the nucleus, where the genetic information (DNA) of a cell is located, and can’t be reproduced or integrated into the DNA. The antigen is exported to the myocyte cell surface where the immune system’s antigen presenting cells detect the protein, ingest it, and take it to regional lymph nodes where interactions with T cells and B cells results in antibodies, T cell–mediated immunity, and generation of immune memory T cells and B cells. A particular subset of T cells – cytotoxic or killer T cells – destroy cells that have been infected by a pathogen. The SARS-CoV-2 mRNA vaccine from Pfizer was reported to induce powerful cytotoxic T-cell responses. Results for Moderna’s vaccine had not been reported at the time this column was prepared, but I anticipate the same positive results.

The revolutionary aspect of mRNA vaccines is the speed at which they can be designed and produced. This is why they lead the pack among the SARS-CoV-2 vaccine candidates and why the National Institute of Allergy and Infectious Diseases provided financial, technical, and/or clinical support. Indeed, once the amino acid sequence of a protein can be determined (a relatively easy task these days) it’s straightforward to synthesize mRNA in the lab – and it can be done incredibly fast. It is reported that the mRNA code for the vaccine by Moderna was made in 2 days and production development was completed in about 2 months.²

A 2007 World Health Organization report noted that infectious diseases are emerging at “the historically unprecedented rate of one per year.”³ Severe acute respiratory syndrome (SARS), Zika, Ebola, and avian and swine flu are recent examples. For most vaccines against emerging diseases, the challenge is about speed: developing and manufacturing a vaccine and getting it to persons who need it as quickly as possible. The current seasonal flu vaccine takes about 6 months to develop; it takes years for most of the traditional vaccines. That’s why once the infrastructure is in place, mRNA vaccines may prove to offer a big advantage as vaccines against emerging pathogens.
 

Early efficacy results have been surprising

Both vaccines were reported to produce about 95% efficacy in the final analysis. That was unexpectedly high because most vaccines for respiratory illness achieve efficacy of 60%-80%, e.g., flu vaccines. However, the efficacy rate may drop as time goes by because stimulation of short-term immunity would be in the earliest reported results.

Preventing SARS-CoV-2 cases is an important aspect of a coronavirus vaccine, but preventing severe illness is especially important considering that severe cases can result in prolonged intubation/artificial ventilation, prolonged disability and death. Pfizer/BioNTech had not released any data on the breakdown of severe cases as this column was finalized. In Moderna’s clinical trial, a secondary endpoint analyzed severe cases of COVID-19 and included 30 severe cases (as defined in the study protocol) in this analysis. All 30 cases occurred in the placebo group and none in the mRNA-1273–vaccinated group. In the Pfizer/BioNTech trial there were too few cases of severe illness to calculate efficacy.

Duration of immunity and need to revaccinate after initial primary vaccination are unknowns. Study of induction of B- and T-cell memory and levels of long-term protection have not been reported thus far.
 

Could mRNA COVID-19 vaccines be dangerous in the long term?

These will be the first-ever mRNA vaccines brought to market for humans. In order to receive Food and Drug Administration approval, the companies had to prove there were no immediate or short-term negative adverse effects from the vaccines. The companies reported that their independent data-monitoring committees hadn’t “reported any serious safety concerns.” However, fairly significant local reactions at the site of injection, fever, malaise, and fatigue occur with modest frequency following vaccinations with these products, reportedly in 10%-15% of vaccinees. Overall, the immediate reaction profile appears to be more severe than what occurs following seasonal influenza vaccination. When mass inoculations with these completely new and revolutionary vaccines begins, we will know virtually nothing about their long-term side effects. The possibility of systemic inflammatory responses that could lead to autoimmune conditions, persistence of the induced immunogen expression, development of autoreactive antibodies, and toxic effects of delivery components have been raised as theoretical concerns.^4-6 None of these theoretical risks have been observed to date and postmarketing phase 4 safety monitoring studies are in place from the Centers for Disease Control and Prevention and the companies that produce the vaccines. This is a risk public health authorities are willing to take because the risk to benefit calculation strongly favors taking theoretical risks, compared with clear benefits in preventing severe illnesses and death.

What about availability?

Pfizer/BioNTech expects to be able to produce up to 50 million vaccine doses in 2020 and up to 1.3 billion doses in 2021. Moderna expects to produce 20 million doses by the end of 2020, and 500 million to 1 billion doses in 2021. Storage requirements are inherent to the composition of the vaccines with their differing lipid nanoparticle delivery systems. Pfizer/BioNTech’s BNT162b2 has to be stored and transported at –80° C, which requires specialized freezers, which most doctors’ offices and pharmacies are unlikely to have on site, or dry ice containers. Once the vaccine is thawed, it can only remain in the refrigerator for 24 hours. Moderna’s mRNA-1273 will be much easier to distribute. The vaccine is stable in a standard freezer at –20° C for up to 6 months, in a refrigerator for up to 30 days within that 6-month shelf life, and at room temperature for up to 12 hours.

Timelines and testing other vaccines

Strong efficacy data from the two leading SARS-CoV-2 vaccines and emergency-use authorization Food and Drug Administration approval suggest the window for testing additional vaccine candidates in the United States could soon start to close. Of the more than 200 vaccines in development for SARS-CoV-2, at least 7 have a chance of gathering pivotal data before the front-runners become broadly available.

Testing diverse vaccine candidates, based on different technologies, is important for ensuring sufficient supply and could lead to products with tolerability and safety profiles that make them better suited, or more attractive, to subsets of the population. Different vaccine antigens and technologies also may yield different durations of protection, a question that will not be answered until long after the first products are on the market.

AstraZeneca enrolled about 23,000 subjects into its two phase 3 trials of AZD1222 (ChAdOx1 nCoV-19): a 40,000-subject U.S. trial and a 10,000-subject study in Brazil. AstraZeneca’s AZD1222, developed with the University of Oxford (England), uses a replication defective simian adenovirus vector called ChAdOx1.AZD1222 which encodes the SARS-CoV-2 spike protein. After injection, the viral vector delivers recombinant DNA that is decoded to mRNA, followed by mRNA decoding to become a protein. A serendipitous manufacturing error for the first 3,000 doses resulted in a half dose for those subjects before the error was discovered. Full doses were given to those subjects on second injections and those subjects showed 90% efficacy. Subjects who received 2 full doses showed 62% efficacy. A vaccine cannot be licensed based on 3,000 subjects so AstraZeneca has started a new phase 3 trial involving many more subjects to receive the combination lower dose followed by the full dose.

Johnson and Johnson (J&J) started its phase 3 trial evaluating a single dose of JNJ-78436735 in September. Phase 3 data may be reported by the end of2020. In November, J&J announced it was starting a second phase 3 trial to test two doses of the candidate. J&J’s JNJ-78436735 encodes the SARS-CoV-2 spike protein in an adenovirus serotype 26 (Ad26) vector, which is one of the two adenovirus vectors used in Sputnik V, the Russian vaccine reported to have 90% efficacy at an early interim analysis.

Sanofi and Novavax are both developing protein-based vaccines, a proven modality. Sanofi, in partnership with GlaxoSmithKline started a phase 1/2 clinical trial in the Fall 2020 with plans to commence a phase 3 trial in late December. Sanofi developed the protein ingredients and GlaxoSmithKline added one of their novel adjuvants. Novavax expects data from a U.K. phase 3 trial of NVX-CoV2373 in early 2021 and began a U.S. phase 3 study in late November. NVX-CoV2373 was created using Novavax’ recombinant nanoparticle technology to generate antigen derived from the coronavirus spike protein and contains Novavax’s patented saponin-based Matrix-M adjuvant.

Inovio Pharmaceuticals was gearing up to start a U.S. phase 2/3 trial of DNA vaccine INO-4800 by the end of 2020.

After Moderna and Pfizer-BioNTech, CureVac has the next most advanced mRNA vaccine. It was planned that a phase 2b/3 trial of CVnCoV would be conducted in Europe, Latin America, Africa, and Asia. Sanofi is also developing a mRNA vaccine as a second product in addition to its protein vaccine.

Vaxxinity planned to begin phase 3 testing of UB-612, a multitope peptide–based vaccine, in Brazil by the end of 2020.

However, emergency-use authorizations for the Pfizer and Moderna vaccines could hinder trial recruitment in at least two ways. Given the gravity of the pandemic, some stakeholders believe it would be ethical to unblind ongoing trials to give subjects the opportunity to switch to a vaccine proven to be effective. Even if unblinding doesn’t occur, as the two authorized vaccines start to become widely available, volunteering for clinical trials may become less attractive.
 

Dr. Pichichero is a specialist in pediatric infectious diseases, and director of the Research Institute at Rochester (N.Y.) General Hospital. He said he has no relevant financial disclosures. Email Dr. Pichichero at [email protected].

References

1. Wolff JA et al. Science. 1990 Mar 23. doi: 10.1126/science.1690918.

2. Jackson LA et al. N Engl J Med. 2020 Nov 12. doi: 10.1056/NEJMoa2022483.

3. Prentice T and Reinders LT. The world health report 2007. (Geneva Switzerland: World Health Organization, 2007).

4. Peck KM and Lauring AS. J Virol. 2018. doi: 10.1128/JVI.01031-17.

5. Pepini T et al. J Immunol. 2017 May 15. doi: 10.4049/jimmunol.1601877.

6. Theofilopoulos AN et al. Annu Rev Immunol. 2005. doi: 10.1146/annurev.immunol.23.021704.115843.

In mid-November, Pfizer/BioNTech were the first with surprising positive protection interim data for their coronavirus vaccine, BNT162b2. A week later, Moderna released interim efficacy results showing its coronavirus vaccine, mRNA-1273, also protected patients from developing SARS-CoV-2 infections. Both studies included mostly healthy adults. A diverse ethnic and racial vaccinated population was included. A reasonable number of persons aged over 65 years, and persons with stable compromising medical conditions were included. Adolescents aged 16 years and over were included. Younger adolescents have been vaccinated or such studies are in the planning or early implementation stage as 2020 came to a close.

These are new and revolutionary vaccines, although the ability to inject mRNA into animals dates back to 1990, technological advances today make it a reality.¹ Traditional vaccines typically involve injection with antigens such as purified proteins or polysaccharides or inactivated/attenuated viruses. mRNA vaccines work differently. They do not contain antigens. Instead, they contain a blueprint for the antigen in the form of genetic material, mRNA. In the case of Pfizer’s and Moderna’s vaccines, the mRNA provides the genetic information to synthesize the spike protein that the SARS-CoV-2 virus uses to attach to and infect human cells. Each type of vaccine is packaged in proprietary lipid nanoparticles to protect the mRNA from rapid degradation, and the nanoparticles serve as an adjuvant to attract immune cells to the site of injection. (The properties of the respective lipid nanoparticle packaging may be the factor that impacts storage requirements discussed below.) When injected into muscle (myocyte), the lipid nanoparticles containing the mRNA inside are taken into muscle cells, where the cytoplasmic ribosomes detect and decode the mRNA resulting in the production of the spike protein antigen. It should be noted that the mRNA does not enter the nucleus, where the genetic information (DNA) of a cell is located, and can’t be reproduced or integrated into the DNA. The antigen is exported to the myocyte cell surface where the immune system’s antigen presenting cells detect the protein, ingest it, and take it to regional lymph nodes where interactions with T cells and B cells results in antibodies, T cell–mediated immunity, and generation of immune memory T cells and B cells. A particular subset of T cells – cytotoxic or killer T cells – destroy cells that have been infected by a pathogen. The SARS-CoV-2 mRNA vaccine from Pfizer was reported to induce powerful cytotoxic T-cell responses. Results for Moderna’s vaccine had not been reported at the time this column was prepared, but I anticipate the same positive results.

The revolutionary aspect of mRNA vaccines is the speed at which they can be designed and produced. This is why they lead the pack among the SARS-CoV-2 vaccine candidates and why the National Institute of Allergy and Infectious Diseases provided financial, technical, and/or clinical support. Indeed, once the amino acid sequence of a protein can be determined (a relatively easy task these days) it’s straightforward to synthesize mRNA in the lab – and it can be done incredibly fast. It is reported that the mRNA code for the vaccine by Moderna was made in 2 days and production development was completed in about 2 months.²

A 2007 World Health Organization report noted that infectious diseases are emerging at “the historically unprecedented rate of one per year.”³ Severe acute respiratory syndrome (SARS), Zika, Ebola, and avian and swine flu are recent examples. For most vaccines against emerging diseases, the challenge is about speed: developing and manufacturing a vaccine and getting it to persons who need it as quickly as possible. The current seasonal flu vaccine takes about 6 months to develop; it takes years for most of the traditional vaccines. That’s why once the infrastructure is in place, mRNA vaccines may prove to offer a big advantage as vaccines against emerging pathogens.
 

Early efficacy results have been surprising

Both vaccines were reported to produce about 95% efficacy in the final analysis. That was unexpectedly high because most vaccines for respiratory illness achieve efficacy of 60%-80%, e.g., flu vaccines. However, the efficacy rate may drop as time goes by because stimulation of short-term immunity would be in the earliest reported results.

Preventing SARS-CoV-2 cases is an important aspect of a coronavirus vaccine, but preventing severe illness is especially important considering that severe cases can result in prolonged intubation/artificial ventilation, prolonged disability and death. Pfizer/BioNTech had not released any data on the breakdown of severe cases as this column was finalized. In Moderna’s clinical trial, a secondary endpoint analyzed severe cases of COVID-19 and included 30 severe cases (as defined in the study protocol) in this analysis. All 30 cases occurred in the placebo group and none in the mRNA-1273–vaccinated group. In the Pfizer/BioNTech trial there were too few cases of severe illness to calculate efficacy.

Duration of immunity and need to revaccinate after initial primary vaccination are unknowns. Study of induction of B- and T-cell memory and levels of long-term protection have not been reported thus far.
 

Could mRNA COVID-19 vaccines be dangerous in the long term?

These will be the first-ever mRNA vaccines brought to market for humans. In order to receive Food and Drug Administration approval, the companies had to prove there were no immediate or short-term negative adverse effects from the vaccines. The companies reported that their independent data-monitoring committees hadn’t “reported any serious safety concerns.” However, fairly significant local reactions at the site of injection, fever, malaise, and fatigue occur with modest frequency following vaccinations with these products, reportedly in 10%-15% of vaccinees. Overall, the immediate reaction profile appears to be more severe than what occurs following seasonal influenza vaccination. When mass inoculations with these completely new and revolutionary vaccines begins, we will know virtually nothing about their long-term side effects. The possibility of systemic inflammatory responses that could lead to autoimmune conditions, persistence of the induced immunogen expression, development of autoreactive antibodies, and toxic effects of delivery components have been raised as theoretical concerns.^4-6 None of these theoretical risks have been observed to date and postmarketing phase 4 safety monitoring studies are in place from the Centers for Disease Control and Prevention and the companies that produce the vaccines. This is a risk public health authorities are willing to take because the risk to benefit calculation strongly favors taking theoretical risks, compared with clear benefits in preventing severe illnesses and death.

What about availability?

Pfizer/BioNTech expects to be able to produce up to 50 million vaccine doses in 2020 and up to 1.3 billion doses in 2021. Moderna expects to produce 20 million doses by the end of 2020, and 500 million to 1 billion doses in 2021. Storage requirements are inherent to the composition of the vaccines with their differing lipid nanoparticle delivery systems. Pfizer/BioNTech’s BNT162b2 has to be stored and transported at –80° C, which requires specialized freezers, which most doctors’ offices and pharmacies are unlikely to have on site, or dry ice containers. Once the vaccine is thawed, it can only remain in the refrigerator for 24 hours. Moderna’s mRNA-1273 will be much easier to distribute. The vaccine is stable in a standard freezer at –20° C for up to 6 months, in a refrigerator for up to 30 days within that 6-month shelf life, and at room temperature for up to 12 hours.

Timelines and testing other vaccines

Strong efficacy data from the two leading SARS-CoV-2 vaccines and emergency-use authorization Food and Drug Administration approval suggest the window for testing additional vaccine candidates in the United States could soon start to close. Of the more than 200 vaccines in development for SARS-CoV-2, at least 7 have a chance of gathering pivotal data before the front-runners become broadly available.

Testing diverse vaccine candidates, based on different technologies, is important for ensuring sufficient supply and could lead to products with tolerability and safety profiles that make them better suited, or more attractive, to subsets of the population. Different vaccine antigens and technologies also may yield different durations of protection, a question that will not be answered until long after the first products are on the market.

AstraZeneca enrolled about 23,000 subjects into its two phase 3 trials of AZD1222 (ChAdOx1 nCoV-19): a 40,000-subject U.S. trial and a 10,000-subject study in Brazil. AstraZeneca’s AZD1222, developed with the University of Oxford (England), uses a replication defective simian adenovirus vector called ChAdOx1.AZD1222 which encodes the SARS-CoV-2 spike protein. After injection, the viral vector delivers recombinant DNA that is decoded to mRNA, followed by mRNA decoding to become a protein. A serendipitous manufacturing error for the first 3,000 doses resulted in a half dose for those subjects before the error was discovered. Full doses were given to those subjects on second injections and those subjects showed 90% efficacy. Subjects who received 2 full doses showed 62% efficacy. A vaccine cannot be licensed based on 3,000 subjects so AstraZeneca has started a new phase 3 trial involving many more subjects to receive the combination lower dose followed by the full dose.

Johnson and Johnson (J&J) started its phase 3 trial evaluating a single dose of JNJ-78436735 in September. Phase 3 data may be reported by the end of2020. In November, J&J announced it was starting a second phase 3 trial to test two doses of the candidate. J&J’s JNJ-78436735 encodes the SARS-CoV-2 spike protein in an adenovirus serotype 26 (Ad26) vector, which is one of the two adenovirus vectors used in Sputnik V, the Russian vaccine reported to have 90% efficacy at an early interim analysis.

Sanofi and Novavax are both developing protein-based vaccines, a proven modality. Sanofi, in partnership with GlaxoSmithKline started a phase 1/2 clinical trial in the Fall 2020 with plans to commence a phase 3 trial in late December. Sanofi developed the protein ingredients and GlaxoSmithKline added one of their novel adjuvants. Novavax expects data from a U.K. phase 3 trial of NVX-CoV2373 in early 2021 and began a U.S. phase 3 study in late November. NVX-CoV2373 was created using Novavax’ recombinant nanoparticle technology to generate antigen derived from the coronavirus spike protein and contains Novavax’s patented saponin-based Matrix-M adjuvant.

Inovio Pharmaceuticals was gearing up to start a U.S. phase 2/3 trial of DNA vaccine INO-4800 by the end of 2020.

After Moderna and Pfizer-BioNTech, CureVac has the next most advanced mRNA vaccine. It was planned that a phase 2b/3 trial of CVnCoV would be conducted in Europe, Latin America, Africa, and Asia. Sanofi is also developing a mRNA vaccine as a second product in addition to its protein vaccine.

Vaxxinity planned to begin phase 3 testing of UB-612, a multitope peptide–based vaccine, in Brazil by the end of 2020.

However, emergency-use authorizations for the Pfizer and Moderna vaccines could hinder trial recruitment in at least two ways. Given the gravity of the pandemic, some stakeholders believe it would be ethical to unblind ongoing trials to give subjects the opportunity to switch to a vaccine proven to be effective. Even if unblinding doesn’t occur, as the two authorized vaccines start to become widely available, volunteering for clinical trials may become less attractive.
 

Dr. Pichichero is a specialist in pediatric infectious diseases, and director of the Research Institute at Rochester (N.Y.) General Hospital. He said he has no relevant financial disclosures. Email Dr. Pichichero at [email protected].

References

1. Wolff JA et al. Science. 1990 Mar 23. doi: 10.1126/science.1690918.

2. Jackson LA et al. N Engl J Med. 2020 Nov 12. doi: 10.1056/NEJMoa2022483.

3. Prentice T and Reinders LT. The world health report 2007. (Geneva Switzerland: World Health Organization, 2007).

4. Peck KM and Lauring AS. J Virol. 2018. doi: 10.1128/JVI.01031-17.

5. Pepini T et al. J Immunol. 2017 May 15. doi: 10.4049/jimmunol.1601877.

6. Theofilopoulos AN et al. Annu Rev Immunol. 2005. doi: 10.1146/annurev.immunol.23.021704.115843.

In mid-November, Pfizer/BioNTech were the first with surprising positive protection interim data for their coronavirus vaccine, BNT162b2. A week later, Moderna released interim efficacy results showing its coronavirus vaccine, mRNA-1273, also protected patients from developing SARS-CoV-2 infections. Both studies included mostly healthy adults. A diverse ethnic and racial vaccinated population was included. A reasonable number of persons aged over 65 years, and persons with stable compromising medical conditions were included. Adolescents aged 16 years and over were included. Younger adolescents have been vaccinated or such studies are in the planning or early implementation stage as 2020 came to a close.

These are new and revolutionary vaccines, although the ability to inject mRNA into animals dates back to 1990, technological advances today make it a reality.¹ Traditional vaccines typically involve injection with antigens such as purified proteins or polysaccharides or inactivated/attenuated viruses. mRNA vaccines work differently. They do not contain antigens. Instead, they contain a blueprint for the antigen in the form of genetic material, mRNA. In the case of Pfizer’s and Moderna’s vaccines, the mRNA provides the genetic information to synthesize the spike protein that the SARS-CoV-2 virus uses to attach to and infect human cells. Each type of vaccine is packaged in proprietary lipid nanoparticles to protect the mRNA from rapid degradation, and the nanoparticles serve as an adjuvant to attract immune cells to the site of injection. (The properties of the respective lipid nanoparticle packaging may be the factor that impacts storage requirements discussed below.) When injected into muscle (myocyte), the lipid nanoparticles containing the mRNA inside are taken into muscle cells, where the cytoplasmic ribosomes detect and decode the mRNA resulting in the production of the spike protein antigen. It should be noted that the mRNA does not enter the nucleus, where the genetic information (DNA) of a cell is located, and can’t be reproduced or integrated into the DNA. The antigen is exported to the myocyte cell surface where the immune system’s antigen presenting cells detect the protein, ingest it, and take it to regional lymph nodes where interactions with T cells and B cells results in antibodies, T cell–mediated immunity, and generation of immune memory T cells and B cells. A particular subset of T cells – cytotoxic or killer T cells – destroy cells that have been infected by a pathogen. The SARS-CoV-2 mRNA vaccine from Pfizer was reported to induce powerful cytotoxic T-cell responses. Results for Moderna’s vaccine had not been reported at the time this column was prepared, but I anticipate the same positive results.

The revolutionary aspect of mRNA vaccines is the speed at which they can be designed and produced. This is why they lead the pack among the SARS-CoV-2 vaccine candidates and why the National Institute of Allergy and Infectious Diseases provided financial, technical, and/or clinical support. Indeed, once the amino acid sequence of a protein can be determined (a relatively easy task these days) it’s straightforward to synthesize mRNA in the lab – and it can be done incredibly fast. It is reported that the mRNA code for the vaccine by Moderna was made in 2 days and production development was completed in about 2 months.²

A 2007 World Health Organization report noted that infectious diseases are emerging at “the historically unprecedented rate of one per year.”³ Severe acute respiratory syndrome (SARS), Zika, Ebola, and avian and swine flu are recent examples. For most vaccines against emerging diseases, the challenge is about speed: developing and manufacturing a vaccine and getting it to persons who need it as quickly as possible. The current seasonal flu vaccine takes about 6 months to develop; it takes years for most of the traditional vaccines. That’s why once the infrastructure is in place, mRNA vaccines may prove to offer a big advantage as vaccines against emerging pathogens.
 

Early efficacy results have been surprising

Both vaccines were reported to produce about 95% efficacy in the final analysis. That was unexpectedly high because most vaccines for respiratory illness achieve efficacy of 60%-80%, e.g., flu vaccines. However, the efficacy rate may drop as time goes by because stimulation of short-term immunity would be in the earliest reported results.

Preventing SARS-CoV-2 cases is an important aspect of a coronavirus vaccine, but preventing severe illness is especially important considering that severe cases can result in prolonged intubation/artificial ventilation, prolonged disability and death. Pfizer/BioNTech had not released any data on the breakdown of severe cases as this column was finalized. In Moderna’s clinical trial, a secondary endpoint analyzed severe cases of COVID-19 and included 30 severe cases (as defined in the study protocol) in this analysis. All 30 cases occurred in the placebo group and none in the mRNA-1273–vaccinated group. In the Pfizer/BioNTech trial there were too few cases of severe illness to calculate efficacy.

Duration of immunity and need to revaccinate after initial primary vaccination are unknowns. Study of induction of B- and T-cell memory and levels of long-term protection have not been reported thus far.
 

Could mRNA COVID-19 vaccines be dangerous in the long term?

These will be the first-ever mRNA vaccines brought to market for humans. In order to receive Food and Drug Administration approval, the companies had to prove there were no immediate or short-term negative adverse effects from the vaccines. The companies reported that their independent data-monitoring committees hadn’t “reported any serious safety concerns.” However, fairly significant local reactions at the site of injection, fever, malaise, and fatigue occur with modest frequency following vaccinations with these products, reportedly in 10%-15% of vaccinees. Overall, the immediate reaction profile appears to be more severe than what occurs following seasonal influenza vaccination. When mass inoculations with these completely new and revolutionary vaccines begins, we will know virtually nothing about their long-term side effects. The possibility of systemic inflammatory responses that could lead to autoimmune conditions, persistence of the induced immunogen expression, development of autoreactive antibodies, and toxic effects of delivery components have been raised as theoretical concerns.^4-6 None of these theoretical risks have been observed to date and postmarketing phase 4 safety monitoring studies are in place from the Centers for Disease Control and Prevention and the companies that produce the vaccines. This is a risk public health authorities are willing to take because the risk to benefit calculation strongly favors taking theoretical risks, compared with clear benefits in preventing severe illnesses and death.

What about availability?

Pfizer/BioNTech expects to be able to produce up to 50 million vaccine doses in 2020 and up to 1.3 billion doses in 2021. Moderna expects to produce 20 million doses by the end of 2020, and 500 million to 1 billion doses in 2021. Storage requirements are inherent to the composition of the vaccines with their differing lipid nanoparticle delivery systems. Pfizer/BioNTech’s BNT162b2 has to be stored and transported at –80° C, which requires specialized freezers, which most doctors’ offices and pharmacies are unlikely to have on site, or dry ice containers. Once the vaccine is thawed, it can only remain in the refrigerator for 24 hours. Moderna’s mRNA-1273 will be much easier to distribute. The vaccine is stable in a standard freezer at –20° C for up to 6 months, in a refrigerator for up to 30 days within that 6-month shelf life, and at room temperature for up to 12 hours.

Timelines and testing other vaccines

Strong efficacy data from the two leading SARS-CoV-2 vaccines and emergency-use authorization Food and Drug Administration approval suggest the window for testing additional vaccine candidates in the United States could soon start to close. Of the more than 200 vaccines in development for SARS-CoV-2, at least 7 have a chance of gathering pivotal data before the front-runners become broadly available.

Testing diverse vaccine candidates, based on different technologies, is important for ensuring sufficient supply and could lead to products with tolerability and safety profiles that make them better suited, or more attractive, to subsets of the population. Different vaccine antigens and technologies also may yield different durations of protection, a question that will not be answered until long after the first products are on the market.

AstraZeneca enrolled about 23,000 subjects into its two phase 3 trials of AZD1222 (ChAdOx1 nCoV-19): a 40,000-subject U.S. trial and a 10,000-subject study in Brazil. AstraZeneca’s AZD1222, developed with the University of Oxford (England), uses a replication defective simian adenovirus vector called ChAdOx1.AZD1222 which encodes the SARS-CoV-2 spike protein. After injection, the viral vector delivers recombinant DNA that is decoded to mRNA, followed by mRNA decoding to become a protein. A serendipitous manufacturing error for the first 3,000 doses resulted in a half dose for those subjects before the error was discovered. Full doses were given to those subjects on second injections and those subjects showed 90% efficacy. Subjects who received 2 full doses showed 62% efficacy. A vaccine cannot be licensed based on 3,000 subjects so AstraZeneca has started a new phase 3 trial involving many more subjects to receive the combination lower dose followed by the full dose.

Johnson and Johnson (J&J) started its phase 3 trial evaluating a single dose of JNJ-78436735 in September. Phase 3 data may be reported by the end of2020. In November, J&J announced it was starting a second phase 3 trial to test two doses of the candidate. J&J’s JNJ-78436735 encodes the SARS-CoV-2 spike protein in an adenovirus serotype 26 (Ad26) vector, which is one of the two adenovirus vectors used in Sputnik V, the Russian vaccine reported to have 90% efficacy at an early interim analysis.

Sanofi and Novavax are both developing protein-based vaccines, a proven modality. Sanofi, in partnership with GlaxoSmithKline started a phase 1/2 clinical trial in the Fall 2020 with plans to commence a phase 3 trial in late December. Sanofi developed the protein ingredients and GlaxoSmithKline added one of their novel adjuvants. Novavax expects data from a U.K. phase 3 trial of NVX-CoV2373 in early 2021 and began a U.S. phase 3 study in late November. NVX-CoV2373 was created using Novavax’ recombinant nanoparticle technology to generate antigen derived from the coronavirus spike protein and contains Novavax’s patented saponin-based Matrix-M adjuvant.

Inovio Pharmaceuticals was gearing up to start a U.S. phase 2/3 trial of DNA vaccine INO-4800 by the end of 2020.

After Moderna and Pfizer-BioNTech, CureVac has the next most advanced mRNA vaccine. It was planned that a phase 2b/3 trial of CVnCoV would be conducted in Europe, Latin America, Africa, and Asia. Sanofi is also developing a mRNA vaccine as a second product in addition to its protein vaccine.

Vaxxinity planned to begin phase 3 testing of UB-612, a multitope peptide–based vaccine, in Brazil by the end of 2020.

However, emergency-use authorizations for the Pfizer and Moderna vaccines could hinder trial recruitment in at least two ways. Given the gravity of the pandemic, some stakeholders believe it would be ethical to unblind ongoing trials to give subjects the opportunity to switch to a vaccine proven to be effective. Even if unblinding doesn’t occur, as the two authorized vaccines start to become widely available, volunteering for clinical trials may become less attractive.
 

Dr. Pichichero is a specialist in pediatric infectious diseases, and director of the Research Institute at Rochester (N.Y.) General Hospital. He said he has no relevant financial disclosures. Email Dr. Pichichero at [email protected].

References

1. Wolff JA et al. Science. 1990 Mar 23. doi: 10.1126/science.1690918.

2. Jackson LA et al. N Engl J Med. 2020 Nov 12. doi: 10.1056/NEJMoa2022483.

3. Prentice T and Reinders LT. The world health report 2007. (Geneva Switzerland: World Health Organization, 2007).

4. Peck KM and Lauring AS. J Virol. 2018. doi: 10.1128/JVI.01031-17.

5. Pepini T et al. J Immunol. 2017 May 15. doi: 10.4049/jimmunol.1601877.

6. Theofilopoulos AN et al. Annu Rev Immunol. 2005. doi: 10.1146/annurev.immunol.23.021704.115843.

The Centers for Disease Control and Prevention (CDC) advisory committee recommended on December 12 the recently authorized Pfizer-BioNTech COVID-19 vaccine for people age 16 and over in the United States, stating they found it was safe and effective.

The agency said it will quickly issue guidance to clinicians so they can determine when and when not to give the vaccine, and to help them communicate the risks and benefits to patients.

CDC staff gave a preview of those clinical considerations at the agency’s Advisory Committee on Immunization Practices (ACIP) meeting on December 12 and said it would be holding calls with clinicians on December 13 and 14.

The CDC will also issue guidance December 13 on how organizations can handle the workforce problems that might arise as health care workers experience side effects from vaccination.

ACIP voted 11-0, with three recusals, to recommend use of the Pfizer-BioNTech mRNA vaccine in individuals 16 years or older according to the guidelines of the Food and Drug Administration’s (FDA’s) emergency use authorization issued December 11.

The panel also voted unanimously to include the vaccine in 2021 immunization schedules. All panel members said the recommendation should go hand-in-hand with ACIP’s previous recommendation on December 1 that allocation of the vaccine be phased-in, with health care workers and residents and staff of long-term care facilities in phase 1a.

Allergies, pregnant women?

ACIP panelists said clinicians need more guidance on whether to use the vaccine in pregnant or breastfeeding women, the immunocompromised, or those who have a history of allergies.

The FDA health care provider information sheet said there is not enough data to recommend vaccinating those women or the immunocompromised, and also advises against giving the vaccine to individuals who have a history of serious allergic reaction to any component of the vaccine.

Peter Marks, MD, PhD, director of the FDA’s Center for Biologic Evaluation and Research (CBER) clarified this in a briefing on December 12, noting that women who are pregnant or lactating can make the decision in consultation with their physician. And, he said, patients with any other history of allergy should be able to safely get the vaccine.

The CDC — in its soon-to-be-released guidance — will make the same recommendations. For any woman considering vaccination, she should consider the level of COVID-19 in the community, her personal risk of contracting the virus, the risks to her or her fetus of developing the disease, and the vaccine’s known side effects, Sarah Mbaeyi, MD, MPH, a medical officer at the agency, said during the panel meeting December 12.

She added that the CDC will also urge physicians to advise women to take acetaminophen if they develop a fever after vaccination — to protect the developing fetus from fever.

Sandra Fryhofer, MD, representing the American Medical Association, commended the CDC for these recommendations. But she also called on Pfizer, the FDA, and the CDC to make data from the developmental and reproductive toxicity (DART) studies public as soon as possible.

“We really need to put those results on warp speed and get them out there to give our physicians and pregnant women more information,” said Fryhofer, an adjunct associate professor of medicine at Emory University School of Medicine in Atlanta, Georgia.

The American College of Obstetricians and Gynecologists (ACOG) will also soon release guidance for vaccinating pregnant and breastfeeding women, said Linda Eckert, MD, FACOG, an ACOG representative on the panel.

ACOG and the CDC met the morning of December 12 to discuss risks and benefits with experts in immunology, placental pathology, and vaccine kinetics, she said.

“The overall complete consensus was that we don’t see biological plausibility at this time for placental transfer of the mRNA and that we see that direct fetal exposure or the possibility of fetal inflammatory response is extremely unlikely,” said Eckert, professor of obstetrics and gynecology at the University of Washington, Seattle. “Clearly we are waiting on the data.”

A Pfizer official told the ACIP panel that preliminary data “show no indication of either developmental or reproductive toxicity,” and that the company plans to send the final DART data to the FDA at the end of December.

On the potential for allergic reactions, the CDC concurred with the FDA that the vaccine should not be given to people with a history of serious reactions. The agency added that the category should include anyone who has had a reaction to any vaccine or injectable drug product because injectables may contain the same ingredients as the Pfizer vaccine, said Mbaeyi.

The CDC will also urge clinicians to observe patients with a history of anaphylaxis for 30 minutes after vaccination and all patients for at least 15 minutes afterward.

Should teens be a special population?

At least one ACIP panel member — Henry Bernstein, DO, MHCM, FAAP — said he was concerned that backing use of the vaccine in 16- and 17-year-olds was a leap of faith, given that Pfizer had extremely limited data on this cohort.

Bernstein, professor of pediatrics at the Zucker School of Medicine at Hofstra/Northwell in Hempstead, New York, also said that systemic reactions were more common in that age group.

He argued for making the 16- and 17-year-olds a “special population” that would get specific attention and guidance for vaccination from the federal agencies and professional societies.

Bernstein said he did not want to sow any more doubts in parents’ minds about vaccination, noting that hesitancy was a growing concern. “A successful pediatric vaccination program depends on creating and sustaining parental confidence in both the safety and effectiveness of this vaccine,” he said.

Many panelists, however, noted that there has been no evidence to suggest that the vaccine is not safe or less effective in that younger age group.

Yvonne Maldonado, MD, the American Academy of Pediatrics representative on the panel, said that this age group should not be denied the vaccine as they often have essential or front-line jobs that put them at higher risk for infection.

“I am very concerned about this message being sent out that this vaccine will not be safe in children,” said Maldonado, professor of pediatrics and health research and policy at Stanford University School of Medicine in California.

“We currently have no evidence that that is the case,” she said, adding there is also no indication younger children are biologically or physiologically different in their response or safety risk than 18-year-olds.

Vaccine = hope

Committee members breathed a sigh of relief at the end of the 2-day meeting, saying that although the Pfizer vaccine is not perfect, it represents a scientific milestone and a significant advance against the continuing march of the SARS-CoV-2 pandemic.

“This vaccine and future vaccines do provide a promise for a lot of progress in the future,” said panelist Beth P. Bell, MD, MPH, clinical professor of global health at the University of Washington School of Public Health in Seattle.

Peter Szilagyi, MD, MPH, executive vice-chair and vice-chair for research at the University of California, Los Angeles pediatrics department, said, “I’m really hopeful that this is the beginning of the end of the coronavirus pandemic.”

“The need for this vaccine is profound,” said Veronica McNally, president and CEO of the Franny Strong Foundation in West Bloomfield, Michigan.

The ACIP panel also made the argument that while the at least $10 billion spent on vaccine development by the federal government’s Operation Warp Speed alone has been a good investment, more spending is needed to actually get Americans vaccinated.

The imbalance between the two is “shocking and needs to be corrected,” said Bell. “We are not going to be able to protect the American public if we don’t have a way to deliver the vaccine to them.”

This article first appeared on Medscape.com.

The Centers for Disease Control and Prevention (CDC) advisory committee recommended on December 12 the recently authorized Pfizer-BioNTech COVID-19 vaccine for people age 16 and over in the United States, stating they found it was safe and effective.

The agency said it will quickly issue guidance to clinicians so they can determine when and when not to give the vaccine, and to help them communicate the risks and benefits to patients.

CDC staff gave a preview of those clinical considerations at the agency’s Advisory Committee on Immunization Practices (ACIP) meeting on December 12 and said it would be holding calls with clinicians on December 13 and 14.

The CDC will also issue guidance December 13 on how organizations can handle the workforce problems that might arise as health care workers experience side effects from vaccination.

ACIP voted 11-0, with three recusals, to recommend use of the Pfizer-BioNTech mRNA vaccine in individuals 16 years or older according to the guidelines of the Food and Drug Administration’s (FDA’s) emergency use authorization issued December 11.

The panel also voted unanimously to include the vaccine in 2021 immunization schedules. All panel members said the recommendation should go hand-in-hand with ACIP’s previous recommendation on December 1 that allocation of the vaccine be phased-in, with health care workers and residents and staff of long-term care facilities in phase 1a.

Allergies, pregnant women?

ACIP panelists said clinicians need more guidance on whether to use the vaccine in pregnant or breastfeeding women, the immunocompromised, or those who have a history of allergies.

The FDA health care provider information sheet said there is not enough data to recommend vaccinating those women or the immunocompromised, and also advises against giving the vaccine to individuals who have a history of serious allergic reaction to any component of the vaccine.

Peter Marks, MD, PhD, director of the FDA’s Center for Biologic Evaluation and Research (CBER) clarified this in a briefing on December 12, noting that women who are pregnant or lactating can make the decision in consultation with their physician. And, he said, patients with any other history of allergy should be able to safely get the vaccine.

The CDC — in its soon-to-be-released guidance — will make the same recommendations. For any woman considering vaccination, she should consider the level of COVID-19 in the community, her personal risk of contracting the virus, the risks to her or her fetus of developing the disease, and the vaccine’s known side effects, Sarah Mbaeyi, MD, MPH, a medical officer at the agency, said during the panel meeting December 12.

She added that the CDC will also urge physicians to advise women to take acetaminophen if they develop a fever after vaccination — to protect the developing fetus from fever.

Sandra Fryhofer, MD, representing the American Medical Association, commended the CDC for these recommendations. But she also called on Pfizer, the FDA, and the CDC to make data from the developmental and reproductive toxicity (DART) studies public as soon as possible.

“We really need to put those results on warp speed and get them out there to give our physicians and pregnant women more information,” said Fryhofer, an adjunct associate professor of medicine at Emory University School of Medicine in Atlanta, Georgia.

The American College of Obstetricians and Gynecologists (ACOG) will also soon release guidance for vaccinating pregnant and breastfeeding women, said Linda Eckert, MD, FACOG, an ACOG representative on the panel.

ACOG and the CDC met the morning of December 12 to discuss risks and benefits with experts in immunology, placental pathology, and vaccine kinetics, she said.

“The overall complete consensus was that we don’t see biological plausibility at this time for placental transfer of the mRNA and that we see that direct fetal exposure or the possibility of fetal inflammatory response is extremely unlikely,” said Eckert, professor of obstetrics and gynecology at the University of Washington, Seattle. “Clearly we are waiting on the data.”

A Pfizer official told the ACIP panel that preliminary data “show no indication of either developmental or reproductive toxicity,” and that the company plans to send the final DART data to the FDA at the end of December.

On the potential for allergic reactions, the CDC concurred with the FDA that the vaccine should not be given to people with a history of serious reactions. The agency added that the category should include anyone who has had a reaction to any vaccine or injectable drug product because injectables may contain the same ingredients as the Pfizer vaccine, said Mbaeyi.

The CDC will also urge clinicians to observe patients with a history of anaphylaxis for 30 minutes after vaccination and all patients for at least 15 minutes afterward.

Should teens be a special population?

At least one ACIP panel member — Henry Bernstein, DO, MHCM, FAAP — said he was concerned that backing use of the vaccine in 16- and 17-year-olds was a leap of faith, given that Pfizer had extremely limited data on this cohort.

Bernstein, professor of pediatrics at the Zucker School of Medicine at Hofstra/Northwell in Hempstead, New York, also said that systemic reactions were more common in that age group.

He argued for making the 16- and 17-year-olds a “special population” that would get specific attention and guidance for vaccination from the federal agencies and professional societies.

Bernstein said he did not want to sow any more doubts in parents’ minds about vaccination, noting that hesitancy was a growing concern. “A successful pediatric vaccination program depends on creating and sustaining parental confidence in both the safety and effectiveness of this vaccine,” he said.

Many panelists, however, noted that there has been no evidence to suggest that the vaccine is not safe or less effective in that younger age group.

Yvonne Maldonado, MD, the American Academy of Pediatrics representative on the panel, said that this age group should not be denied the vaccine as they often have essential or front-line jobs that put them at higher risk for infection.

“I am very concerned about this message being sent out that this vaccine will not be safe in children,” said Maldonado, professor of pediatrics and health research and policy at Stanford University School of Medicine in California.

“We currently have no evidence that that is the case,” she said, adding there is also no indication younger children are biologically or physiologically different in their response or safety risk than 18-year-olds.

Vaccine = hope

Committee members breathed a sigh of relief at the end of the 2-day meeting, saying that although the Pfizer vaccine is not perfect, it represents a scientific milestone and a significant advance against the continuing march of the SARS-CoV-2 pandemic.

“This vaccine and future vaccines do provide a promise for a lot of progress in the future,” said panelist Beth P. Bell, MD, MPH, clinical professor of global health at the University of Washington School of Public Health in Seattle.

Peter Szilagyi, MD, MPH, executive vice-chair and vice-chair for research at the University of California, Los Angeles pediatrics department, said, “I’m really hopeful that this is the beginning of the end of the coronavirus pandemic.”

“The need for this vaccine is profound,” said Veronica McNally, president and CEO of the Franny Strong Foundation in West Bloomfield, Michigan.

The ACIP panel also made the argument that while the at least $10 billion spent on vaccine development by the federal government’s Operation Warp Speed alone has been a good investment, more spending is needed to actually get Americans vaccinated.

The imbalance between the two is “shocking and needs to be corrected,” said Bell. “We are not going to be able to protect the American public if we don’t have a way to deliver the vaccine to them.”

This article first appeared on Medscape.com.

The Centers for Disease Control and Prevention (CDC) advisory committee recommended on December 12 the recently authorized Pfizer-BioNTech COVID-19 vaccine for people age 16 and over in the United States, stating they found it was safe and effective.

The agency said it will quickly issue guidance to clinicians so they can determine when and when not to give the vaccine, and to help them communicate the risks and benefits to patients.

CDC staff gave a preview of those clinical considerations at the agency’s Advisory Committee on Immunization Practices (ACIP) meeting on December 12 and said it would be holding calls with clinicians on December 13 and 14.

The CDC will also issue guidance December 13 on how organizations can handle the workforce problems that might arise as health care workers experience side effects from vaccination.

ACIP voted 11-0, with three recusals, to recommend use of the Pfizer-BioNTech mRNA vaccine in individuals 16 years or older according to the guidelines of the Food and Drug Administration’s (FDA’s) emergency use authorization issued December 11.

The panel also voted unanimously to include the vaccine in 2021 immunization schedules. All panel members said the recommendation should go hand-in-hand with ACIP’s previous recommendation on December 1 that allocation of the vaccine be phased-in, with health care workers and residents and staff of long-term care facilities in phase 1a.

Allergies, pregnant women?

ACIP panelists said clinicians need more guidance on whether to use the vaccine in pregnant or breastfeeding women, the immunocompromised, or those who have a history of allergies.

The FDA health care provider information sheet said there is not enough data to recommend vaccinating those women or the immunocompromised, and also advises against giving the vaccine to individuals who have a history of serious allergic reaction to any component of the vaccine.

Peter Marks, MD, PhD, director of the FDA’s Center for Biologic Evaluation and Research (CBER) clarified this in a briefing on December 12, noting that women who are pregnant or lactating can make the decision in consultation with their physician. And, he said, patients with any other history of allergy should be able to safely get the vaccine.

The CDC — in its soon-to-be-released guidance — will make the same recommendations. For any woman considering vaccination, she should consider the level of COVID-19 in the community, her personal risk of contracting the virus, the risks to her or her fetus of developing the disease, and the vaccine’s known side effects, Sarah Mbaeyi, MD, MPH, a medical officer at the agency, said during the panel meeting December 12.

She added that the CDC will also urge physicians to advise women to take acetaminophen if they develop a fever after vaccination — to protect the developing fetus from fever.

Sandra Fryhofer, MD, representing the American Medical Association, commended the CDC for these recommendations. But she also called on Pfizer, the FDA, and the CDC to make data from the developmental and reproductive toxicity (DART) studies public as soon as possible.

“We really need to put those results on warp speed and get them out there to give our physicians and pregnant women more information,” said Fryhofer, an adjunct associate professor of medicine at Emory University School of Medicine in Atlanta, Georgia.

The American College of Obstetricians and Gynecologists (ACOG) will also soon release guidance for vaccinating pregnant and breastfeeding women, said Linda Eckert, MD, FACOG, an ACOG representative on the panel.

ACOG and the CDC met the morning of December 12 to discuss risks and benefits with experts in immunology, placental pathology, and vaccine kinetics, she said.

“The overall complete consensus was that we don’t see biological plausibility at this time for placental transfer of the mRNA and that we see that direct fetal exposure or the possibility of fetal inflammatory response is extremely unlikely,” said Eckert, professor of obstetrics and gynecology at the University of Washington, Seattle. “Clearly we are waiting on the data.”

A Pfizer official told the ACIP panel that preliminary data “show no indication of either developmental or reproductive toxicity,” and that the company plans to send the final DART data to the FDA at the end of December.

On the potential for allergic reactions, the CDC concurred with the FDA that the vaccine should not be given to people with a history of serious reactions. The agency added that the category should include anyone who has had a reaction to any vaccine or injectable drug product because injectables may contain the same ingredients as the Pfizer vaccine, said Mbaeyi.

The CDC will also urge clinicians to observe patients with a history of anaphylaxis for 30 minutes after vaccination and all patients for at least 15 minutes afterward.

Should teens be a special population?

At least one ACIP panel member — Henry Bernstein, DO, MHCM, FAAP — said he was concerned that backing use of the vaccine in 16- and 17-year-olds was a leap of faith, given that Pfizer had extremely limited data on this cohort.

Bernstein, professor of pediatrics at the Zucker School of Medicine at Hofstra/Northwell in Hempstead, New York, also said that systemic reactions were more common in that age group.

He argued for making the 16- and 17-year-olds a “special population” that would get specific attention and guidance for vaccination from the federal agencies and professional societies.

Bernstein said he did not want to sow any more doubts in parents’ minds about vaccination, noting that hesitancy was a growing concern. “A successful pediatric vaccination program depends on creating and sustaining parental confidence in both the safety and effectiveness of this vaccine,” he said.

Many panelists, however, noted that there has been no evidence to suggest that the vaccine is not safe or less effective in that younger age group.

Yvonne Maldonado, MD, the American Academy of Pediatrics representative on the panel, said that this age group should not be denied the vaccine as they often have essential or front-line jobs that put them at higher risk for infection.

“I am very concerned about this message being sent out that this vaccine will not be safe in children,” said Maldonado, professor of pediatrics and health research and policy at Stanford University School of Medicine in California.

“We currently have no evidence that that is the case,” she said, adding there is also no indication younger children are biologically or physiologically different in their response or safety risk than 18-year-olds.

Vaccine = hope

Committee members breathed a sigh of relief at the end of the 2-day meeting, saying that although the Pfizer vaccine is not perfect, it represents a scientific milestone and a significant advance against the continuing march of the SARS-CoV-2 pandemic.

“This vaccine and future vaccines do provide a promise for a lot of progress in the future,” said panelist Beth P. Bell, MD, MPH, clinical professor of global health at the University of Washington School of Public Health in Seattle.

Peter Szilagyi, MD, MPH, executive vice-chair and vice-chair for research at the University of California, Los Angeles pediatrics department, said, “I’m really hopeful that this is the beginning of the end of the coronavirus pandemic.”

“The need for this vaccine is profound,” said Veronica McNally, president and CEO of the Franny Strong Foundation in West Bloomfield, Michigan.

The ACIP panel also made the argument that while the at least $10 billion spent on vaccine development by the federal government’s Operation Warp Speed alone has been a good investment, more spending is needed to actually get Americans vaccinated.

The imbalance between the two is “shocking and needs to be corrected,” said Bell. “We are not going to be able to protect the American public if we don’t have a way to deliver the vaccine to them.”

This article first appeared on Medscape.com.

The US Food and Drug Administration (FDA) has authorized Pfizer/BioNTech’s COVID-19 vaccine for emergency use in people 16 years of age and older. 

The much-anticipated emergency use authorization (EUA) of this vaccine — the first such approval in the United States — was greeted with optimism by infectious disease and pulmonary experts, although unanswered questions remain regarding use in people with allergic hypersensitivity, safety in pregnant women, and how smooth distribution will be.

“I am delighted. This is a first, firm step on a long path to getting this COVID pandemic under control,” William Schaffner, MD, professor of infectious diseases at the Vanderbilt University School of Medicine in Nashville, Tennessee, said in an interview.

The FDA gave the green light after the December 10 recommendation from the agency’s Vaccines and Related Biological Products Advisory Committee (VRBPAC) meeting. The committee voted 17-4 in favor of the emergency authorization.

Allergic reactions reported in the UK

After vaccinations with the Pfizer vaccine began in the UK on December 8, reports surfaced of two healthcare workers who experienced allergic reactions. They have since recovered, but officials warned that people with a history of severe allergic reactions should not receive the Pfizer vaccine at this time.

“For the moment, they are asking people who have had notable allergic reactions to step aside while this is investigated. It shows you that the system is working,” Schaffner said.

Both vaccine recipients who experienced anaphylaxis carried EpiPens, as they were at high risk for allergic reactions, Hewlett said. Also, if other COVID-19 vaccines are approved for use in the future, people allergic to the Pfizer vaccine might have another option, he added.

Reassuring role models

Schaffner supports the CDC Advisory Committee on Immunization Practices (ACIP) decision to start vaccinations with healthcare workers and residents of long-term care facilities.

“Vaccinating healthcare workers, in particular, will be a model for the general public,” said Schaffner, who is also a former member of the IDSA board of directors. “If they see those of us in white coats and blue scrubs lining up for the vaccine, that will provide confidence.”

To further increase acceptance of the COVID-19 vaccine, public health officials need to provide information and reassure the general public, Schaffner said.

Hewlett agreed. “I know there are a lot of people in the population who are very hesitant about vaccines. As infection disease specialists and people in public health, we are trying to allay a lot of concerns people have.”

Reassurance will be especially important in minority communities. “They have been disproportionately affected by the virus, and they have a traditional history of not being optimally vaccinated,” Schaffner said. “We need to reach them in particular with good information and reassurance…so they can make good decisions for themselves and their families.”

No vaccine is 100% effective or completely free of side effects. “There is always a chance there can be adverse reactions, but we think for the most part this is going to be a safe and effective vaccine,” said Hewlett, medical director at the Division of Disease Control and deputy to commissioner of health at the Westchester County Department of Health in White Plains, New York.

Distribution: Smooth or full of strife?

In addition to the concern that some people will not take advantage of vaccination against COVID-19, there could be vaccine supply issues down the road, Schaffner said.

Culver agreed. “In the early phases, I expect that there will be some kinks to work out, but because the numbers are relatively small, this should be okay,” he said.

“I think when we start to get into larger-scale vaccination programs — the supply chain, transport, and storage will be a Herculean undertaking,” Culver added. “It will take careful coordination between healthcare providers, distributors, suppliers, and public health officials to pull this off.”

Planning and distribution also should focus beyond US borders. Any issues in vaccine distribution or administration in the United States “will only be multiplied in several other parts of the world,” Culver said. Because COVID-19 is a pandemic, “we need to think about vaccinating globally.”

Investigating adverse events

Adverse events common to vaccinations in general — injection site pain, headaches, and fever — would not be unexpected with the COVID-19 vaccines. However, experts remain concerned that other, unrelated adverse events might be erroneously attributed to vaccination. For example, if a fall, heart attack, or death occurs within days of immunization, some might immediately blame the vaccine product.

“It’s important to remember that any new, highly touted medical therapy like this will receive a lot of scrutiny, so it would be unusual not to hear about something happening to somebody,” Culver said. Vaccine companies and health agencies will be carefully evaluating any reported adverse events to ensure no safety signal was missed in the trials.

“Fortunately, there are systems in place to investigate these events immediately,” Schaffner said.

Pregnancy recommendations pending

One question still looms: Is the COVID-19 vaccination safe for pregnant women? This isn’t just a question for the general public, either, Schaffner said. He estimated that about 70 percent of healthcare workers are women, and data suggests about 300,000 of these healthcare workers are pregnant.

“The CDC’s Advisory Committee on Immunization Practices will speak to that just as soon as the EUA is issued,” he added.

Patients are asking Culver about the priority order for vaccination. He said it’s difficult to provide firm guidance at this point.

People also have “lingering skepticism” about whether vaccine development was done in a prudent way, Culver said. Some people question whether the Pfizer vaccine and others were rushed to market. “So we try to spend time with the patients, reassuring them that all the usual safety evaluations were carefully done,” he said.

Another concern is whether mRNA vaccines can interact with human DNA. “The quick, short, and definitive answer is no,” Schaffner said. The m stands for messenger — the vaccines transmit information. "Once it gets into a cell, the mRNA does not go anywhere near the DNA, and once it transmits its information to the cell appropriately, it gets metabolized, and we excrete all the remnants."

Hewlett pointed out that investigations and surveillance will continue. Because this is an EUA and not full approval, “that essentially means they will still be obligated to collect a lot more data than they would ordinarily,” he said.

How long immunoprotection will last also remains an unknown. “The big question left on the table now is the durability,” Culver said. “Of course, we won’t know the answer to that for quite some time.”

Schaffner and Culver have disclosed no relevant financial relationships. Hewlett was an employee of Pfizer until mid-2019. His previous work as Pfizer’s senior medical director of global medical product evaluation was not associated with development of the COVID-19 vaccine.

This article first appeared on Medscape.com.

The US Food and Drug Administration (FDA) has authorized Pfizer/BioNTech’s COVID-19 vaccine for emergency use in people 16 years of age and older. 

The much-anticipated emergency use authorization (EUA) of this vaccine — the first such approval in the United States — was greeted with optimism by infectious disease and pulmonary experts, although unanswered questions remain regarding use in people with allergic hypersensitivity, safety in pregnant women, and how smooth distribution will be.

“I am delighted. This is a first, firm step on a long path to getting this COVID pandemic under control,” William Schaffner, MD, professor of infectious diseases at the Vanderbilt University School of Medicine in Nashville, Tennessee, said in an interview.

The FDA gave the green light after the December 10 recommendation from the agency’s Vaccines and Related Biological Products Advisory Committee (VRBPAC) meeting. The committee voted 17-4 in favor of the emergency authorization.

Allergic reactions reported in the UK

After vaccinations with the Pfizer vaccine began in the UK on December 8, reports surfaced of two healthcare workers who experienced allergic reactions. They have since recovered, but officials warned that people with a history of severe allergic reactions should not receive the Pfizer vaccine at this time.

“For the moment, they are asking people who have had notable allergic reactions to step aside while this is investigated. It shows you that the system is working,” Schaffner said.

Both vaccine recipients who experienced anaphylaxis carried EpiPens, as they were at high risk for allergic reactions, Hewlett said. Also, if other COVID-19 vaccines are approved for use in the future, people allergic to the Pfizer vaccine might have another option, he added.

Reassuring role models

Schaffner supports the CDC Advisory Committee on Immunization Practices (ACIP) decision to start vaccinations with healthcare workers and residents of long-term care facilities.

“Vaccinating healthcare workers, in particular, will be a model for the general public,” said Schaffner, who is also a former member of the IDSA board of directors. “If they see those of us in white coats and blue scrubs lining up for the vaccine, that will provide confidence.”

To further increase acceptance of the COVID-19 vaccine, public health officials need to provide information and reassure the general public, Schaffner said.

Hewlett agreed. “I know there are a lot of people in the population who are very hesitant about vaccines. As infection disease specialists and people in public health, we are trying to allay a lot of concerns people have.”

Reassurance will be especially important in minority communities. “They have been disproportionately affected by the virus, and they have a traditional history of not being optimally vaccinated,” Schaffner said. “We need to reach them in particular with good information and reassurance…so they can make good decisions for themselves and their families.”

No vaccine is 100% effective or completely free of side effects. “There is always a chance there can be adverse reactions, but we think for the most part this is going to be a safe and effective vaccine,” said Hewlett, medical director at the Division of Disease Control and deputy to commissioner of health at the Westchester County Department of Health in White Plains, New York.

Distribution: Smooth or full of strife?

In addition to the concern that some people will not take advantage of vaccination against COVID-19, there could be vaccine supply issues down the road, Schaffner said.

Culver agreed. “In the early phases, I expect that there will be some kinks to work out, but because the numbers are relatively small, this should be okay,” he said.

“I think when we start to get into larger-scale vaccination programs — the supply chain, transport, and storage will be a Herculean undertaking,” Culver added. “It will take careful coordination between healthcare providers, distributors, suppliers, and public health officials to pull this off.”

Planning and distribution also should focus beyond US borders. Any issues in vaccine distribution or administration in the United States “will only be multiplied in several other parts of the world,” Culver said. Because COVID-19 is a pandemic, “we need to think about vaccinating globally.”

Investigating adverse events

Adverse events common to vaccinations in general — injection site pain, headaches, and fever — would not be unexpected with the COVID-19 vaccines. However, experts remain concerned that other, unrelated adverse events might be erroneously attributed to vaccination. For example, if a fall, heart attack, or death occurs within days of immunization, some might immediately blame the vaccine product.

“It’s important to remember that any new, highly touted medical therapy like this will receive a lot of scrutiny, so it would be unusual not to hear about something happening to somebody,” Culver said. Vaccine companies and health agencies will be carefully evaluating any reported adverse events to ensure no safety signal was missed in the trials.

“Fortunately, there are systems in place to investigate these events immediately,” Schaffner said.

Pregnancy recommendations pending

One question still looms: Is the COVID-19 vaccination safe for pregnant women? This isn’t just a question for the general public, either, Schaffner said. He estimated that about 70 percent of healthcare workers are women, and data suggests about 300,000 of these healthcare workers are pregnant.

“The CDC’s Advisory Committee on Immunization Practices will speak to that just as soon as the EUA is issued,” he added.

Patients are asking Culver about the priority order for vaccination. He said it’s difficult to provide firm guidance at this point.

People also have “lingering skepticism” about whether vaccine development was done in a prudent way, Culver said. Some people question whether the Pfizer vaccine and others were rushed to market. “So we try to spend time with the patients, reassuring them that all the usual safety evaluations were carefully done,” he said.

Another concern is whether mRNA vaccines can interact with human DNA. “The quick, short, and definitive answer is no,” Schaffner said. The m stands for messenger — the vaccines transmit information. "Once it gets into a cell, the mRNA does not go anywhere near the DNA, and once it transmits its information to the cell appropriately, it gets metabolized, and we excrete all the remnants."

Hewlett pointed out that investigations and surveillance will continue. Because this is an EUA and not full approval, “that essentially means they will still be obligated to collect a lot more data than they would ordinarily,” he said.

How long immunoprotection will last also remains an unknown. “The big question left on the table now is the durability,” Culver said. “Of course, we won’t know the answer to that for quite some time.”

Schaffner and Culver have disclosed no relevant financial relationships. Hewlett was an employee of Pfizer until mid-2019. His previous work as Pfizer’s senior medical director of global medical product evaluation was not associated with development of the COVID-19 vaccine.

This article first appeared on Medscape.com.

The US Food and Drug Administration (FDA) has authorized Pfizer/BioNTech’s COVID-19 vaccine for emergency use in people 16 years of age and older. 

The much-anticipated emergency use authorization (EUA) of this vaccine — the first such approval in the United States — was greeted with optimism by infectious disease and pulmonary experts, although unanswered questions remain regarding use in people with allergic hypersensitivity, safety in pregnant women, and how smooth distribution will be.

“I am delighted. This is a first, firm step on a long path to getting this COVID pandemic under control,” William Schaffner, MD, professor of infectious diseases at the Vanderbilt University School of Medicine in Nashville, Tennessee, said in an interview.

The FDA gave the green light after the December 10 recommendation from the agency’s Vaccines and Related Biological Products Advisory Committee (VRBPAC) meeting. The committee voted 17-4 in favor of the emergency authorization.

Allergic reactions reported in the UK

After vaccinations with the Pfizer vaccine began in the UK on December 8, reports surfaced of two healthcare workers who experienced allergic reactions. They have since recovered, but officials warned that people with a history of severe allergic reactions should not receive the Pfizer vaccine at this time.

“For the moment, they are asking people who have had notable allergic reactions to step aside while this is investigated. It shows you that the system is working,” Schaffner said.

Both vaccine recipients who experienced anaphylaxis carried EpiPens, as they were at high risk for allergic reactions, Hewlett said. Also, if other COVID-19 vaccines are approved for use in the future, people allergic to the Pfizer vaccine might have another option, he added.

Reassuring role models

Schaffner supports the CDC Advisory Committee on Immunization Practices (ACIP) decision to start vaccinations with healthcare workers and residents of long-term care facilities.

“Vaccinating healthcare workers, in particular, will be a model for the general public,” said Schaffner, who is also a former member of the IDSA board of directors. “If they see those of us in white coats and blue scrubs lining up for the vaccine, that will provide confidence.”

To further increase acceptance of the COVID-19 vaccine, public health officials need to provide information and reassure the general public, Schaffner said.

Hewlett agreed. “I know there are a lot of people in the population who are very hesitant about vaccines. As infection disease specialists and people in public health, we are trying to allay a lot of concerns people have.”

Reassurance will be especially important in minority communities. “They have been disproportionately affected by the virus, and they have a traditional history of not being optimally vaccinated,” Schaffner said. “We need to reach them in particular with good information and reassurance…so they can make good decisions for themselves and their families.”

No vaccine is 100% effective or completely free of side effects. “There is always a chance there can be adverse reactions, but we think for the most part this is going to be a safe and effective vaccine,” said Hewlett, medical director at the Division of Disease Control and deputy to commissioner of health at the Westchester County Department of Health in White Plains, New York.

Distribution: Smooth or full of strife?

In addition to the concern that some people will not take advantage of vaccination against COVID-19, there could be vaccine supply issues down the road, Schaffner said.

Culver agreed. “In the early phases, I expect that there will be some kinks to work out, but because the numbers are relatively small, this should be okay,” he said.

“I think when we start to get into larger-scale vaccination programs — the supply chain, transport, and storage will be a Herculean undertaking,” Culver added. “It will take careful coordination between healthcare providers, distributors, suppliers, and public health officials to pull this off.”

Planning and distribution also should focus beyond US borders. Any issues in vaccine distribution or administration in the United States “will only be multiplied in several other parts of the world,” Culver said. Because COVID-19 is a pandemic, “we need to think about vaccinating globally.”

Investigating adverse events

Adverse events common to vaccinations in general — injection site pain, headaches, and fever — would not be unexpected with the COVID-19 vaccines. However, experts remain concerned that other, unrelated adverse events might be erroneously attributed to vaccination. For example, if a fall, heart attack, or death occurs within days of immunization, some might immediately blame the vaccine product.

“It’s important to remember that any new, highly touted medical therapy like this will receive a lot of scrutiny, so it would be unusual not to hear about something happening to somebody,” Culver said. Vaccine companies and health agencies will be carefully evaluating any reported adverse events to ensure no safety signal was missed in the trials.

“Fortunately, there are systems in place to investigate these events immediately,” Schaffner said.

Pregnancy recommendations pending

One question still looms: Is the COVID-19 vaccination safe for pregnant women? This isn’t just a question for the general public, either, Schaffner said. He estimated that about 70 percent of healthcare workers are women, and data suggests about 300,000 of these healthcare workers are pregnant.

“The CDC’s Advisory Committee on Immunization Practices will speak to that just as soon as the EUA is issued,” he added.

Patients are asking Culver about the priority order for vaccination. He said it’s difficult to provide firm guidance at this point.

People also have “lingering skepticism” about whether vaccine development was done in a prudent way, Culver said. Some people question whether the Pfizer vaccine and others were rushed to market. “So we try to spend time with the patients, reassuring them that all the usual safety evaluations were carefully done,” he said.

Another concern is whether mRNA vaccines can interact with human DNA. “The quick, short, and definitive answer is no,” Schaffner said. The m stands for messenger — the vaccines transmit information. "Once it gets into a cell, the mRNA does not go anywhere near the DNA, and once it transmits its information to the cell appropriately, it gets metabolized, and we excrete all the remnants."

Hewlett pointed out that investigations and surveillance will continue. Because this is an EUA and not full approval, “that essentially means they will still be obligated to collect a lot more data than they would ordinarily,” he said.

How long immunoprotection will last also remains an unknown. “The big question left on the table now is the durability,” Culver said. “Of course, we won’t know the answer to that for quite some time.”

Schaffner and Culver have disclosed no relevant financial relationships. Hewlett was an employee of Pfizer until mid-2019. His previous work as Pfizer’s senior medical director of global medical product evaluation was not associated with development of the COVID-19 vaccine.

This article first appeared on Medscape.com.

In August 2020, the US Preventive Services Task Force published an update of its recommendation on preventing sexually transmitted infections (STIs) with behavioral counseling interventions.¹

Whom to counsel. The USPSTF continues to recommend behavioral counseling for all sexually active adolescents and for adults at increased risk for STIs. Adults at increased risk include those who have been diagnosed with an STI in the past year, those with multiple sex partners or a sex partner at high risk for an STI, those not using condoms consistently, and those belonging to populations with high prevalence rates of STIs. These populations with high prevalence rates include¹

• individuals seeking care at STI clinics,
• sexual and gender minorities, and
• those who are positive for human immunodeficiency virus (HIV), use injection drugs, exchange sex for drugs or money, or have recently been in a correctional facility.

Features of effective counseling. The Task Force recommends that primary care clinicians provide behavioral counseling or refer to counseling services or suggest media-based interventions. The most effective counseling interventions are those that span more than 120 minutes over several sessions. But the Task Force also states that counseling lasting about 30 minutes in a single session can also be effective. Counseling should include information about common STIs and their modes of transmission; encouragement in the use of safer sex practices; and training in proper condom use, how to communicate with partners about safer sex practices, and problem-­solving. Various approaches to this counseling can be found at https://uspreventiveservicestaskforce.org/uspstf/recommendation/sexually-­transmitted-infections-behavioral-counseling.

This updated recommendation is timely because most STIs in the United States have been increasing in incidence for the past decade or longer.² Per 100,000 population, the total number of chlamydia cases since 2000 has risen from 251.4 to 539.9 (115%);gonorrhea cases since 2009 have risen from 98.1 to 179.1 (83%).³ And since 2000, the total number of reported syphilis cases per 100,000 has risen from 2.1 to 10.8 (414%).³

Chlamydia affects primarily those ages 15 to 24 years, with highest rates occurring in females (FIGURE 1).² Gonorrhea affects women and men fairly evenly with slightly higher rates in men; the highest rates are seen in those ages 20 to 29 (FIGURE 2).² Syphilis predominantly affects men who have sex with men, and the highest rates are in those ages 20 to 34 (FIGURE 3).² In contrast to these upward trends, the number of HIV cases diagnosed has been relatively steady, with a slight downward trend over the past decade.⁴Other STIs that can be prevented through behavioral counseling include herpes simplex, human papillomavirus (HPV), hepatitis B virus (HBV) and trichomonas vaginalis.

Continue to: How to integrate STI preventioninto the primary care encounter

How to integrate STI preventioninto the primary care encounter

A key resource for learning to recognize the signs and symptoms of STIs, to correctly diagnose them, and to treat them according to CDC guidelines can be found at www.cdc.gov/std/tg2015/default.htm.⁵ Equally important is to integrate the prevention of STIs into the clinical routine by using a 4-step approach: risk assessment, risk reduction (counseling and chemoprevention), screening, and vaccination.

Risk assessment. The first step in prevention is taking a sexual history to accurately assess a patient’s risk for STIs. The CDC provides a tool (www.cdc.gov/std/products/provider-pocket-guides.htm) that can assist in gathering information in a nonjudgmental fashion about 5 Ps: partners, practices, protection from STIs, past history of STIs, and prevention of pregnancy.

Risk reduction. Following STI risk assessment, recommend risk-reduction interventions, as appropriate. Notable in the new Task Force recommendation are behavioral counseling methods that work. Additionally, when needed, pre-exposure prophylaxis with effective antiretroviral agents can be offered to those at high risk of HIV.⁶

Screening. Task Force recommendations for STI screening are described in the TABLE.^7-12 Screening for HIV, chlamydia, gonorrhea, syphilis, and HBV are also recommended for pregnant women. And, although pregnant women are not specifically mentioned in the recommendation on chlamydia screening, it is reasonable to include it in prenatal care testing for STIs.

Continue to: Although hepatitis C virus...

Although hepatitis C virus (HCV) is transmitted mainly through intravenous drug use, it can also be transmitted sexually. The Task Force recommends screening for HCV in all adults ages 18 to 79 years.¹³

Vaccination. Two STIs can be prevented by immunizations: HPV and HBV. The current recommendations by the Advisory Committee on Immunization Practices (ACIP) are to vaccinate all infants with HBV vaccine and all unvaccinated children and adolescents through age 18.¹⁴ Unvaccinated adults who are at risk for HBV infection, including those at risk through sexual practices, should also be vaccinated.¹⁴

ACIP recommends routine HPV vaccination at age 11 or 12 years, but it can be started as early as 9 years.¹⁵ Catch-up vaccination is recommended for males and females through age 26 years.¹⁵ The vaccine is approved for use in individuals ages 27 through 45 years, but ACIP has not recommended it for routine use in this age group, and has instead recommended shared clinical decision-making to evaluate whether there is potential individual benefit from the vaccine.¹⁵

Public health implications

All STIs are reportable to local or state health departments. This is important for tracking community infection trends and, if resources are available, for contact notification and testing. In most jurisdictions, local health department resources are limited and contact tracing may be restricted to syphilis and HIV infections. When this is the case, it is especially important to instruct patients in whom STIs have been detected to notify their recent sex partners and advise them to be tested or preventively treated.

Recurring counseling is preferrable, but a single session lasting about 30 minutes can also be effective.

Expedited partner therapy (EPT)—providing treatment for exposed sexual contacts without a clinical encounter—is allowed in some states and is a tool that can prevent re-infection in the treated patient and suppress spread in the community. This is most useful for partners of those with gonorrhea, chlamydia, or trichomonas. The CDC has published guidance on how to implement EPT in a clinical setting if state law allows it.¹⁶

In August 2020, the US Preventive Services Task Force published an update of its recommendation on preventing sexually transmitted infections (STIs) with behavioral counseling interventions.¹

Whom to counsel. The USPSTF continues to recommend behavioral counseling for all sexually active adolescents and for adults at increased risk for STIs. Adults at increased risk include those who have been diagnosed with an STI in the past year, those with multiple sex partners or a sex partner at high risk for an STI, those not using condoms consistently, and those belonging to populations with high prevalence rates of STIs. These populations with high prevalence rates include¹

• individuals seeking care at STI clinics,
• sexual and gender minorities, and
• those who are positive for human immunodeficiency virus (HIV), use injection drugs, exchange sex for drugs or money, or have recently been in a correctional facility.

Features of effective counseling. The Task Force recommends that primary care clinicians provide behavioral counseling or refer to counseling services or suggest media-based interventions. The most effective counseling interventions are those that span more than 120 minutes over several sessions. But the Task Force also states that counseling lasting about 30 minutes in a single session can also be effective. Counseling should include information about common STIs and their modes of transmission; encouragement in the use of safer sex practices; and training in proper condom use, how to communicate with partners about safer sex practices, and problem-­solving. Various approaches to this counseling can be found at https://uspreventiveservicestaskforce.org/uspstf/recommendation/sexually-­transmitted-infections-behavioral-counseling.

This updated recommendation is timely because most STIs in the United States have been increasing in incidence for the past decade or longer.² Per 100,000 population, the total number of chlamydia cases since 2000 has risen from 251.4 to 539.9 (115%);gonorrhea cases since 2009 have risen from 98.1 to 179.1 (83%).³ And since 2000, the total number of reported syphilis cases per 100,000 has risen from 2.1 to 10.8 (414%).³

Chlamydia affects primarily those ages 15 to 24 years, with highest rates occurring in females (FIGURE 1).² Gonorrhea affects women and men fairly evenly with slightly higher rates in men; the highest rates are seen in those ages 20 to 29 (FIGURE 2).² Syphilis predominantly affects men who have sex with men, and the highest rates are in those ages 20 to 34 (FIGURE 3).² In contrast to these upward trends, the number of HIV cases diagnosed has been relatively steady, with a slight downward trend over the past decade.⁴Other STIs that can be prevented through behavioral counseling include herpes simplex, human papillomavirus (HPV), hepatitis B virus (HBV) and trichomonas vaginalis.

Continue to: How to integrate STI preventioninto the primary care encounter

How to integrate STI preventioninto the primary care encounter

A key resource for learning to recognize the signs and symptoms of STIs, to correctly diagnose them, and to treat them according to CDC guidelines can be found at www.cdc.gov/std/tg2015/default.htm.⁵ Equally important is to integrate the prevention of STIs into the clinical routine by using a 4-step approach: risk assessment, risk reduction (counseling and chemoprevention), screening, and vaccination.

Risk assessment. The first step in prevention is taking a sexual history to accurately assess a patient’s risk for STIs. The CDC provides a tool (www.cdc.gov/std/products/provider-pocket-guides.htm) that can assist in gathering information in a nonjudgmental fashion about 5 Ps: partners, practices, protection from STIs, past history of STIs, and prevention of pregnancy.

Risk reduction. Following STI risk assessment, recommend risk-reduction interventions, as appropriate. Notable in the new Task Force recommendation are behavioral counseling methods that work. Additionally, when needed, pre-exposure prophylaxis with effective antiretroviral agents can be offered to those at high risk of HIV.⁶

Screening. Task Force recommendations for STI screening are described in the TABLE.^7-12 Screening for HIV, chlamydia, gonorrhea, syphilis, and HBV are also recommended for pregnant women. And, although pregnant women are not specifically mentioned in the recommendation on chlamydia screening, it is reasonable to include it in prenatal care testing for STIs.

Continue to: Although hepatitis C virus...

Although hepatitis C virus (HCV) is transmitted mainly through intravenous drug use, it can also be transmitted sexually. The Task Force recommends screening for HCV in all adults ages 18 to 79 years.¹³

Vaccination. Two STIs can be prevented by immunizations: HPV and HBV. The current recommendations by the Advisory Committee on Immunization Practices (ACIP) are to vaccinate all infants with HBV vaccine and all unvaccinated children and adolescents through age 18.¹⁴ Unvaccinated adults who are at risk for HBV infection, including those at risk through sexual practices, should also be vaccinated.¹⁴

ACIP recommends routine HPV vaccination at age 11 or 12 years, but it can be started as early as 9 years.¹⁵ Catch-up vaccination is recommended for males and females through age 26 years.¹⁵ The vaccine is approved for use in individuals ages 27 through 45 years, but ACIP has not recommended it for routine use in this age group, and has instead recommended shared clinical decision-making to evaluate whether there is potential individual benefit from the vaccine.¹⁵

Public health implications

All STIs are reportable to local or state health departments. This is important for tracking community infection trends and, if resources are available, for contact notification and testing. In most jurisdictions, local health department resources are limited and contact tracing may be restricted to syphilis and HIV infections. When this is the case, it is especially important to instruct patients in whom STIs have been detected to notify their recent sex partners and advise them to be tested or preventively treated.

Recurring counseling is preferrable, but a single session lasting about 30 minutes can also be effective.

Expedited partner therapy (EPT)—providing treatment for exposed sexual contacts without a clinical encounter—is allowed in some states and is a tool that can prevent re-infection in the treated patient and suppress spread in the community. This is most useful for partners of those with gonorrhea, chlamydia, or trichomonas. The CDC has published guidance on how to implement EPT in a clinical setting if state law allows it.¹⁶

In August 2020, the US Preventive Services Task Force published an update of its recommendation on preventing sexually transmitted infections (STIs) with behavioral counseling interventions.¹

Whom to counsel. The USPSTF continues to recommend behavioral counseling for all sexually active adolescents and for adults at increased risk for STIs. Adults at increased risk include those who have been diagnosed with an STI in the past year, those with multiple sex partners or a sex partner at high risk for an STI, those not using condoms consistently, and those belonging to populations with high prevalence rates of STIs. These populations with high prevalence rates include¹

• individuals seeking care at STI clinics,
• sexual and gender minorities, and
• those who are positive for human immunodeficiency virus (HIV), use injection drugs, exchange sex for drugs or money, or have recently been in a correctional facility.

Features of effective counseling. The Task Force recommends that primary care clinicians provide behavioral counseling or refer to counseling services or suggest media-based interventions. The most effective counseling interventions are those that span more than 120 minutes over several sessions. But the Task Force also states that counseling lasting about 30 minutes in a single session can also be effective. Counseling should include information about common STIs and their modes of transmission; encouragement in the use of safer sex practices; and training in proper condom use, how to communicate with partners about safer sex practices, and problem-­solving. Various approaches to this counseling can be found at https://uspreventiveservicestaskforce.org/uspstf/recommendation/sexually-­transmitted-infections-behavioral-counseling.

This updated recommendation is timely because most STIs in the United States have been increasing in incidence for the past decade or longer.² Per 100,000 population, the total number of chlamydia cases since 2000 has risen from 251.4 to 539.9 (115%);gonorrhea cases since 2009 have risen from 98.1 to 179.1 (83%).³ And since 2000, the total number of reported syphilis cases per 100,000 has risen from 2.1 to 10.8 (414%).³

Chlamydia affects primarily those ages 15 to 24 years, with highest rates occurring in females (FIGURE 1).² Gonorrhea affects women and men fairly evenly with slightly higher rates in men; the highest rates are seen in those ages 20 to 29 (FIGURE 2).² Syphilis predominantly affects men who have sex with men, and the highest rates are in those ages 20 to 34 (FIGURE 3).² In contrast to these upward trends, the number of HIV cases diagnosed has been relatively steady, with a slight downward trend over the past decade.⁴Other STIs that can be prevented through behavioral counseling include herpes simplex, human papillomavirus (HPV), hepatitis B virus (HBV) and trichomonas vaginalis.

Continue to: How to integrate STI preventioninto the primary care encounter

How to integrate STI preventioninto the primary care encounter

A key resource for learning to recognize the signs and symptoms of STIs, to correctly diagnose them, and to treat them according to CDC guidelines can be found at www.cdc.gov/std/tg2015/default.htm.⁵ Equally important is to integrate the prevention of STIs into the clinical routine by using a 4-step approach: risk assessment, risk reduction (counseling and chemoprevention), screening, and vaccination.

Risk assessment. The first step in prevention is taking a sexual history to accurately assess a patient’s risk for STIs. The CDC provides a tool (www.cdc.gov/std/products/provider-pocket-guides.htm) that can assist in gathering information in a nonjudgmental fashion about 5 Ps: partners, practices, protection from STIs, past history of STIs, and prevention of pregnancy.

Risk reduction. Following STI risk assessment, recommend risk-reduction interventions, as appropriate. Notable in the new Task Force recommendation are behavioral counseling methods that work. Additionally, when needed, pre-exposure prophylaxis with effective antiretroviral agents can be offered to those at high risk of HIV.⁶

Screening. Task Force recommendations for STI screening are described in the TABLE.^7-12 Screening for HIV, chlamydia, gonorrhea, syphilis, and HBV are also recommended for pregnant women. And, although pregnant women are not specifically mentioned in the recommendation on chlamydia screening, it is reasonable to include it in prenatal care testing for STIs.

Continue to: Although hepatitis C virus...

Although hepatitis C virus (HCV) is transmitted mainly through intravenous drug use, it can also be transmitted sexually. The Task Force recommends screening for HCV in all adults ages 18 to 79 years.¹³

Vaccination. Two STIs can be prevented by immunizations: HPV and HBV. The current recommendations by the Advisory Committee on Immunization Practices (ACIP) are to vaccinate all infants with HBV vaccine and all unvaccinated children and adolescents through age 18.¹⁴ Unvaccinated adults who are at risk for HBV infection, including those at risk through sexual practices, should also be vaccinated.¹⁴

ACIP recommends routine HPV vaccination at age 11 or 12 years, but it can be started as early as 9 years.¹⁵ Catch-up vaccination is recommended for males and females through age 26 years.¹⁵ The vaccine is approved for use in individuals ages 27 through 45 years, but ACIP has not recommended it for routine use in this age group, and has instead recommended shared clinical decision-making to evaluate whether there is potential individual benefit from the vaccine.¹⁵

Public health implications

All STIs are reportable to local or state health departments. This is important for tracking community infection trends and, if resources are available, for contact notification and testing. In most jurisdictions, local health department resources are limited and contact tracing may be restricted to syphilis and HIV infections. When this is the case, it is especially important to instruct patients in whom STIs have been detected to notify their recent sex partners and advise them to be tested or preventively treated.

Recurring counseling is preferrable, but a single session lasting about 30 minutes can also be effective.

Expedited partner therapy (EPT)—providing treatment for exposed sexual contacts without a clinical encounter—is allowed in some states and is a tool that can prevent re-infection in the treated patient and suppress spread in the community. This is most useful for partners of those with gonorrhea, chlamydia, or trichomonas. The CDC has published guidance on how to implement EPT in a clinical setting if state law allows it.¹⁶

With U.S. approval of one coronavirus vaccine likely imminent and approval of a second one expected soon after, physicians will likely be deluged with questions. Public attitudes about the vaccines vary by demographics, with a recent poll showing that men and older adults are more likely to choose vaccination, and women and people of color evincing more wariness.

Although the reasons for reluctance may vary, questions from patient will likely be similar. Some are related to the “warp speed” language about the vaccines. Other concerns arise from the fact that the platform – mRNA – has not been used in human vaccines before. And as with any vaccine, there are rumors and false claims making the rounds on social media.

In anticipation of the most common questions physicians may encounter, two experts, Krutika Kuppalli, MD, assistant professor of medicine in the division of infectious diseases at the Medical University of South Carolina, Charleston, and Angela Rasmussen, PhD, virologist and nonresident affiliate at Georgetown University’s Center for Global Health Science and Security, Washington, talked in an interview about what clinicians can expect and what evidence-based – as well as compassionate – answers might look like.
 

Q: Will this vaccine give me COVID-19?

“There is not an intact virus in there,” Dr. Rasmussen said. The mRNA-based vaccines cannot cause COVID-19 because they don’t use any part of the coronavirus itself. Instead, the Moderna and Pfizer vaccines contain manufactured mRNA molecules that carry the instructions for building the virus’ spike protein. After vaccine administration, the recipient’s own cells take up this mRNA, use it to build this bit of protein, and display it on their surfaces. The foreign protein flag triggers the immune system response.

The mRNA does not enter the cell nucleus or interact with the recipient’s DNA. And because it’s so fragile, it degrades quite quickly. To keep that from happening before cell entry, the mRNAs are cushioned in protective fats.

Q: Was this vaccine made too quickly?

“People have been working on this platform for 30 years, so it’s not that this is brand new,” Dr. Kuppalli said.

Researchers began working on mRNA vaccines in the 1990s. Technological developments in the last decade have meant that their use has become feasible, and they have been tested in animals against many viral diseases. The mRNA vaccines are attractive because they’re expected to be safe and easily manufactured from common materials. That’s what we’ve seen in the COVID-19 pandemic, the  Centers for Disease Control and Prevention says on its website. Design of the spike protein mRNA component began as soon as the viral genome became available in January.

Usually, rolling out a vaccine takes years, so less than a year under a program called Operation Warp Speed can seem like moving too fast, Dr. Rasmussen acknowledged. “The name has given people the impression that by going at warp speed, we’re cutting all the corners. [But] the reality is that Operation Warp Speed is mostly for manufacturing and distribution.”

What underlies the speed is a restructuring of the normal vaccine development process, Dr. Kuppalli said. The same phases of development – animal testing, a small initial human phase, a second for safety testing, a third large phase for efficacy – were all conducted as for any vaccine. But in this case, some phases were completed in parallel, rather than sequentially. This approach has proved so successful that there is already talk about making it the model for developing future vaccines.

Two other factors contributed to the speed, said Dr. Kuppalli and Dr. Rasmussen. First, gearing up production can slow a rollout, but with these vaccines, companies ramped up production even before anyone knew if the vaccines would work – the “warp speed” part. The second factor has been the large number of cases, making exposures more likely and thus accelerating the results of the efficacy trials. “There is so much COVID being transmitted everywhere in the United States that it did not take long to hit the threshold of events to read out phase 3,” Dr. Rasmussen said.

Q: This vaccine has never been used in humans. How do we know it’s safe?

The Pfizer phase 3 trial included more than 43,000 people, and Moderna’s had more than 30,000. The first humans received mRNA-based COVID-19 vaccines in March. The most common adverse events emerge right after a vaccination, Dr. Kuppalli said.

As with any vaccine that gains approval, monitoring will continue.

UK health officials have reported that two health care workers vaccinated in the initial rollout of the Pfizer vaccine had what seems to have been a severe allergic response. Both recipients had a history of anaphylactic allergic responses and carried EpiPens, and both recovered. During the trial, allergic reaction rates were 0.63% in the vaccine group and 0.51% in the placebo group.

As a result of the two reactions, UK regulators are now recommending that patients with a history of severe allergies not receive the vaccine at the current time.

Q: What are the likely side effects?

So far, the most common side effects are pain at the injection site and an achy, flu-like feeling, Dr. Kuppalli said. More severe reactions have been reported, but were not common in the trials.

Dr. Rasmussen noted that the common side effects are a good sign, and signal that the recipient is generating “a robust immune response.”

“Everybody I’ve talked to who’s had the response has said they would go through it again,” Dr. Kruppalli said. “I definitely plan on lining up and being one of the first people to get the vaccine.”

Q: I already had COVID-19 or had a positive antibody test. Do I still need to get the vaccine?

Dr. Rasmussen said that there are “too many unknowns” to say if a history of COVID-19 would make a difference. “We don’t know how long neutralizing antibodies last” after infection, she said. “What we know is that the vaccine tends to produce antibody titers towards the higher end of the spectrum,” suggesting better immunity with vaccination than after natural infection.

Q: Can patients of color feel safe getting the vaccine?

“People of color might be understandably reluctant to take a vaccine that was developed in a way that appears to be faster [than past development],” said Dr. Rasmussen. She said physicians should acknowledge and understand the history that has led them to feel that way, “everything from Tuskegee to Henrietta Lacks to today.”

Empathy is key, and “providers should meet patients where they are and not condescend to them.”

Dr. Kuppalli agreed. “Clinicians really need to work on trying to strip away their biases.”

Thus far there are no safety signals that differ by race or ethnicity, according to the companies. The Pfizer phase 3 trial enrolled just over 9% Black participants, 0.5% Native American/Alaska Native, 0.2% Native Hawaiian/Pacific Islander, 2.3% multiracial participants, and 28% Hispanic/Latinx. For its part, Moderna says that approximately 37% of participants in its phase 3 trial come from communities of color.

Q: What about children and pregnant women?

Although the trials included participants from many different age groups and backgrounds, children and pregnant or lactating women were not among them. Pfizer gained approval in October to include participants as young as age 12 years, and a Moderna spokesperson said in an interview that the company planned pediatric inclusion at the end of 2020, pending approval.

“Unfortunately, we don’t have data on pregnant and lactating women,” Dr. Kuppalli said. She said she hopes that public health organizations such as the CDC will address that in the coming weeks. Dr. Rasmussen called the lack of data in pregnant women and children “a big oversight.”

Dr. Rasmussen has disclosed no relevant financial relationships. Dr. Kuppalli is a consultant with GlaxoSmithKline.

A version of this article originally appeared on Medscape.com.

With U.S. approval of one coronavirus vaccine likely imminent and approval of a second one expected soon after, physicians will likely be deluged with questions. Public attitudes about the vaccines vary by demographics, with a recent poll showing that men and older adults are more likely to choose vaccination, and women and people of color evincing more wariness.

Although the reasons for reluctance may vary, questions from patient will likely be similar. Some are related to the “warp speed” language about the vaccines. Other concerns arise from the fact that the platform – mRNA – has not been used in human vaccines before. And as with any vaccine, there are rumors and false claims making the rounds on social media.

In anticipation of the most common questions physicians may encounter, two experts, Krutika Kuppalli, MD, assistant professor of medicine in the division of infectious diseases at the Medical University of South Carolina, Charleston, and Angela Rasmussen, PhD, virologist and nonresident affiliate at Georgetown University’s Center for Global Health Science and Security, Washington, talked in an interview about what clinicians can expect and what evidence-based – as well as compassionate – answers might look like.
 

Q: Will this vaccine give me COVID-19?

“There is not an intact virus in there,” Dr. Rasmussen said. The mRNA-based vaccines cannot cause COVID-19 because they don’t use any part of the coronavirus itself. Instead, the Moderna and Pfizer vaccines contain manufactured mRNA molecules that carry the instructions for building the virus’ spike protein. After vaccine administration, the recipient’s own cells take up this mRNA, use it to build this bit of protein, and display it on their surfaces. The foreign protein flag triggers the immune system response.

The mRNA does not enter the cell nucleus or interact with the recipient’s DNA. And because it’s so fragile, it degrades quite quickly. To keep that from happening before cell entry, the mRNAs are cushioned in protective fats.

Q: Was this vaccine made too quickly?

“People have been working on this platform for 30 years, so it’s not that this is brand new,” Dr. Kuppalli said.

Researchers began working on mRNA vaccines in the 1990s. Technological developments in the last decade have meant that their use has become feasible, and they have been tested in animals against many viral diseases. The mRNA vaccines are attractive because they’re expected to be safe and easily manufactured from common materials. That’s what we’ve seen in the COVID-19 pandemic, the  Centers for Disease Control and Prevention says on its website. Design of the spike protein mRNA component began as soon as the viral genome became available in January.

Usually, rolling out a vaccine takes years, so less than a year under a program called Operation Warp Speed can seem like moving too fast, Dr. Rasmussen acknowledged. “The name has given people the impression that by going at warp speed, we’re cutting all the corners. [But] the reality is that Operation Warp Speed is mostly for manufacturing and distribution.”

What underlies the speed is a restructuring of the normal vaccine development process, Dr. Kuppalli said. The same phases of development – animal testing, a small initial human phase, a second for safety testing, a third large phase for efficacy – were all conducted as for any vaccine. But in this case, some phases were completed in parallel, rather than sequentially. This approach has proved so successful that there is already talk about making it the model for developing future vaccines.

Two other factors contributed to the speed, said Dr. Kuppalli and Dr. Rasmussen. First, gearing up production can slow a rollout, but with these vaccines, companies ramped up production even before anyone knew if the vaccines would work – the “warp speed” part. The second factor has been the large number of cases, making exposures more likely and thus accelerating the results of the efficacy trials. “There is so much COVID being transmitted everywhere in the United States that it did not take long to hit the threshold of events to read out phase 3,” Dr. Rasmussen said.

Q: This vaccine has never been used in humans. How do we know it’s safe?

The Pfizer phase 3 trial included more than 43,000 people, and Moderna’s had more than 30,000. The first humans received mRNA-based COVID-19 vaccines in March. The most common adverse events emerge right after a vaccination, Dr. Kuppalli said.

As with any vaccine that gains approval, monitoring will continue.

UK health officials have reported that two health care workers vaccinated in the initial rollout of the Pfizer vaccine had what seems to have been a severe allergic response. Both recipients had a history of anaphylactic allergic responses and carried EpiPens, and both recovered. During the trial, allergic reaction rates were 0.63% in the vaccine group and 0.51% in the placebo group.

As a result of the two reactions, UK regulators are now recommending that patients with a history of severe allergies not receive the vaccine at the current time.

Q: What are the likely side effects?

So far, the most common side effects are pain at the injection site and an achy, flu-like feeling, Dr. Kuppalli said. More severe reactions have been reported, but were not common in the trials.

Dr. Rasmussen noted that the common side effects are a good sign, and signal that the recipient is generating “a robust immune response.”

“Everybody I’ve talked to who’s had the response has said they would go through it again,” Dr. Kruppalli said. “I definitely plan on lining up and being one of the first people to get the vaccine.”

Q: I already had COVID-19 or had a positive antibody test. Do I still need to get the vaccine?

Dr. Rasmussen said that there are “too many unknowns” to say if a history of COVID-19 would make a difference. “We don’t know how long neutralizing antibodies last” after infection, she said. “What we know is that the vaccine tends to produce antibody titers towards the higher end of the spectrum,” suggesting better immunity with vaccination than after natural infection.

Q: Can patients of color feel safe getting the vaccine?

“People of color might be understandably reluctant to take a vaccine that was developed in a way that appears to be faster [than past development],” said Dr. Rasmussen. She said physicians should acknowledge and understand the history that has led them to feel that way, “everything from Tuskegee to Henrietta Lacks to today.”

Empathy is key, and “providers should meet patients where they are and not condescend to them.”

Dr. Kuppalli agreed. “Clinicians really need to work on trying to strip away their biases.”

Thus far there are no safety signals that differ by race or ethnicity, according to the companies. The Pfizer phase 3 trial enrolled just over 9% Black participants, 0.5% Native American/Alaska Native, 0.2% Native Hawaiian/Pacific Islander, 2.3% multiracial participants, and 28% Hispanic/Latinx. For its part, Moderna says that approximately 37% of participants in its phase 3 trial come from communities of color.

Q: What about children and pregnant women?

Although the trials included participants from many different age groups and backgrounds, children and pregnant or lactating women were not among them. Pfizer gained approval in October to include participants as young as age 12 years, and a Moderna spokesperson said in an interview that the company planned pediatric inclusion at the end of 2020, pending approval.

“Unfortunately, we don’t have data on pregnant and lactating women,” Dr. Kuppalli said. She said she hopes that public health organizations such as the CDC will address that in the coming weeks. Dr. Rasmussen called the lack of data in pregnant women and children “a big oversight.”

Dr. Rasmussen has disclosed no relevant financial relationships. Dr. Kuppalli is a consultant with GlaxoSmithKline.

A version of this article originally appeared on Medscape.com.

With U.S. approval of one coronavirus vaccine likely imminent and approval of a second one expected soon after, physicians will likely be deluged with questions. Public attitudes about the vaccines vary by demographics, with a recent poll showing that men and older adults are more likely to choose vaccination, and women and people of color evincing more wariness.

Although the reasons for reluctance may vary, questions from patient will likely be similar. Some are related to the “warp speed” language about the vaccines. Other concerns arise from the fact that the platform – mRNA – has not been used in human vaccines before. And as with any vaccine, there are rumors and false claims making the rounds on social media.

In anticipation of the most common questions physicians may encounter, two experts, Krutika Kuppalli, MD, assistant professor of medicine in the division of infectious diseases at the Medical University of South Carolina, Charleston, and Angela Rasmussen, PhD, virologist and nonresident affiliate at Georgetown University’s Center for Global Health Science and Security, Washington, talked in an interview about what clinicians can expect and what evidence-based – as well as compassionate – answers might look like.
 

Q: Will this vaccine give me COVID-19?

“There is not an intact virus in there,” Dr. Rasmussen said. The mRNA-based vaccines cannot cause COVID-19 because they don’t use any part of the coronavirus itself. Instead, the Moderna and Pfizer vaccines contain manufactured mRNA molecules that carry the instructions for building the virus’ spike protein. After vaccine administration, the recipient’s own cells take up this mRNA, use it to build this bit of protein, and display it on their surfaces. The foreign protein flag triggers the immune system response.

The mRNA does not enter the cell nucleus or interact with the recipient’s DNA. And because it’s so fragile, it degrades quite quickly. To keep that from happening before cell entry, the mRNAs are cushioned in protective fats.

Q: Was this vaccine made too quickly?

“People have been working on this platform for 30 years, so it’s not that this is brand new,” Dr. Kuppalli said.

Researchers began working on mRNA vaccines in the 1990s. Technological developments in the last decade have meant that their use has become feasible, and they have been tested in animals against many viral diseases. The mRNA vaccines are attractive because they’re expected to be safe and easily manufactured from common materials. That’s what we’ve seen in the COVID-19 pandemic, the  Centers for Disease Control and Prevention says on its website. Design of the spike protein mRNA component began as soon as the viral genome became available in January.

Usually, rolling out a vaccine takes years, so less than a year under a program called Operation Warp Speed can seem like moving too fast, Dr. Rasmussen acknowledged. “The name has given people the impression that by going at warp speed, we’re cutting all the corners. [But] the reality is that Operation Warp Speed is mostly for manufacturing and distribution.”

What underlies the speed is a restructuring of the normal vaccine development process, Dr. Kuppalli said. The same phases of development – animal testing, a small initial human phase, a second for safety testing, a third large phase for efficacy – were all conducted as for any vaccine. But in this case, some phases were completed in parallel, rather than sequentially. This approach has proved so successful that there is already talk about making it the model for developing future vaccines.

Two other factors contributed to the speed, said Dr. Kuppalli and Dr. Rasmussen. First, gearing up production can slow a rollout, but with these vaccines, companies ramped up production even before anyone knew if the vaccines would work – the “warp speed” part. The second factor has been the large number of cases, making exposures more likely and thus accelerating the results of the efficacy trials. “There is so much COVID being transmitted everywhere in the United States that it did not take long to hit the threshold of events to read out phase 3,” Dr. Rasmussen said.

Q: This vaccine has never been used in humans. How do we know it’s safe?

The Pfizer phase 3 trial included more than 43,000 people, and Moderna’s had more than 30,000. The first humans received mRNA-based COVID-19 vaccines in March. The most common adverse events emerge right after a vaccination, Dr. Kuppalli said.

As with any vaccine that gains approval, monitoring will continue.

UK health officials have reported that two health care workers vaccinated in the initial rollout of the Pfizer vaccine had what seems to have been a severe allergic response. Both recipients had a history of anaphylactic allergic responses and carried EpiPens, and both recovered. During the trial, allergic reaction rates were 0.63% in the vaccine group and 0.51% in the placebo group.

As a result of the two reactions, UK regulators are now recommending that patients with a history of severe allergies not receive the vaccine at the current time.

Q: What are the likely side effects?

So far, the most common side effects are pain at the injection site and an achy, flu-like feeling, Dr. Kuppalli said. More severe reactions have been reported, but were not common in the trials.

Dr. Rasmussen noted that the common side effects are a good sign, and signal that the recipient is generating “a robust immune response.”

“Everybody I’ve talked to who’s had the response has said they would go through it again,” Dr. Kruppalli said. “I definitely plan on lining up and being one of the first people to get the vaccine.”

Q: I already had COVID-19 or had a positive antibody test. Do I still need to get the vaccine?

Dr. Rasmussen said that there are “too many unknowns” to say if a history of COVID-19 would make a difference. “We don’t know how long neutralizing antibodies last” after infection, she said. “What we know is that the vaccine tends to produce antibody titers towards the higher end of the spectrum,” suggesting better immunity with vaccination than after natural infection.

Q: Can patients of color feel safe getting the vaccine?

“People of color might be understandably reluctant to take a vaccine that was developed in a way that appears to be faster [than past development],” said Dr. Rasmussen. She said physicians should acknowledge and understand the history that has led them to feel that way, “everything from Tuskegee to Henrietta Lacks to today.”

Empathy is key, and “providers should meet patients where they are and not condescend to them.”

Dr. Kuppalli agreed. “Clinicians really need to work on trying to strip away their biases.”

Thus far there are no safety signals that differ by race or ethnicity, according to the companies. The Pfizer phase 3 trial enrolled just over 9% Black participants, 0.5% Native American/Alaska Native, 0.2% Native Hawaiian/Pacific Islander, 2.3% multiracial participants, and 28% Hispanic/Latinx. For its part, Moderna says that approximately 37% of participants in its phase 3 trial come from communities of color.

Q: What about children and pregnant women?

Although the trials included participants from many different age groups and backgrounds, children and pregnant or lactating women were not among them. Pfizer gained approval in October to include participants as young as age 12 years, and a Moderna spokesperson said in an interview that the company planned pediatric inclusion at the end of 2020, pending approval.

“Unfortunately, we don’t have data on pregnant and lactating women,” Dr. Kuppalli said. She said she hopes that public health organizations such as the CDC will address that in the coming weeks. Dr. Rasmussen called the lack of data in pregnant women and children “a big oversight.”

Dr. Rasmussen has disclosed no relevant financial relationships. Dr. Kuppalli is a consultant with GlaxoSmithKline.

A version of this article originally appeared on Medscape.com.

A federal advisory panel recommends that health care workers and residents of long-term care facilities be the first to receive a COVID-19 vaccine when one is authorized for use by the Food and Drug Administration.

The Centers for Disease Control and Prevention’s Advisory Committee on Immunization Practices voted 13-1 that both groups be in the highest-priority group for vaccination. As such, ACIP recommends that both be included in phase 1a of the committee’s allocation plan.

The recommendation now goes to CDC director Robert Redfield, MD, for approval. State health departments are expected to rely on the recommendation, but ultimately can make their own decisions on how to allocate vaccine in their states.

“We hope that this vote gets us all one step closer to the day when we can all feel safe again and when this pandemic is over,” said Nancy Messonnier, MD, director of the CDC’s National Center for Immunization and Respiratory Diseases, at today’s meeting.

Health care workers are defined as paid and unpaid individuals serving in health care settings who have the potential for direct or indirect exposure to patients or infectious materials. Long-term care residents are defined as adults who reside in facilities that provide a variety of services, including medical and personal care. Phase 1a would not include children who live in such facilities.

“Our goal in phase 1a with regard to health care personnel is to preserve the workforce and health care capacity regardless of where exposure occurs,” said ACIP panelist Grace Lee, MD, MPH, professor of paediatrics at Stanford (Calif.) University. Thus vaccination would cover clinical support staff, such as nursing assistants, environmental services staff, and food support staff.

“It is crucial to maintain our health care capacity,” said ACIP member Sharon Frey, MD, clinical director at the Center for Vaccine Development at Saint Louis University. “But it’s also important to prevent severe disease and death in the group that is at highest risk of those complications and that includes those in long-term care facilities.”

CDC staff said that staff and residents in those facilities account for 6% of COVID-19 cases and 40% of deaths.

But Helen Keipp Talbot, MD, associate professor of medicine at Vanderbilt University, Nashville, Tenn., voted against putting long-term care residents into the 1a phase. “We have traditionally tried a vaccine in a young healthy population and then hope it works in our frail older adults. So we enter this realm of ‘we hope it works and that it’s safe,’ and that concerns me on many levels particularly for this vaccine,” she said, noting that the vaccines closest to FDA authorization have not been studied in elderly adults who live in nursing homes or assisted living facilities.

She added: “I have no reservations for health care workers taking this vaccine.”
 

Prioritization could change

The phase 1a allocation fits within the “four ethical principles” outlined by ACIP and CDC staff Nov. 23: to maximize benefits and minimize harms, promote justice, mitigate health inequities, and promote transparency.

“My vote reflects maximum benefit, minimum harm, promoting justice and mitigating the health inequalities that exist with regard to distribution of this vaccine,” said ACIP Chair Jose Romero, MD. Romero, chief medical officer of the Arkansas Department of Health, voted in favor of the phase 1a plan.

He and other panelists noted, however, that allocation priorities could change after the FDA reviews and authorizes a vaccine.

The FDA’s Vaccines and Related Biological Products Advisory Committee (VRBPAC) will meet December 10 to review the Pfizer/BioNTech’s messenger RNA-based vaccine (BNT162b2). The companies filed for emergency use on November 20.

A second vaccine, made by Moderna, is not far behind. The company reported on Nov. 30 that its messenger RNA vaccine was 94.1% effective and filed for emergency use the same day. The FDA’s VRBPAC will review the safety and efficacy data for the Moderna vaccine on Dec. 17.

“If individual vaccines receive emergency use authorization, we will have more data to consider, and that could lead to revision of our prioritization,” said ACIP member Robert Atmar, MD, John S. Dunn Research Foundation Clinical Professor in Infectious Diseases at Baylor College of Medicine, Houston.

ACIP will meet again after the Dec. 10 FDA advisory panel. But it won’t recommend a product until after the FDA has authorized it, said Amanda Cohn, MD, senior advisor for vaccines at the CDC’s National Center for Immunization and Respiratory Diseases.
 

Staggered immunization subprioritization urged

The CDC staff said that given the potential that not enough vaccine will be available immediately, it was recommending that health care organizations plan on creating a hierarchy of prioritization within institutions. And, they also urged staggering vaccination for personnel in similar units or positions, citing potential systemic or other reactions among health care workers.

“Consider planning for personnel to have time away from clinical care if health care personnel experience systemic symptoms post vaccination,” said Sarah Oliver, MD, MSPH, from the CDC.

The CDC will soon be issuing guidance on how to handle systemic symptoms with health care workers, Dr. Oliver noted.

Some 40 million doses of the Pfizer/BioNTech and Moderna vaccines are expected to be available by the end of December, with 5 million to 10 million a week coming online after that, Dr. Cohn said. That means not all health care workers will be vaccinated immediately. That may require “subprioritization, but for a limited period of time,” she said.

Dr. Messonnier said that, even with limited supplies, most of the states have told the CDC that they think they can vaccinate all of their health care workers within 3 weeks – some in less time.

The ACIP allocation plan is similar to but not exactly the same as that issued by the National Academy of Sciences, Engineering, and Medicine, which issued recommendations in October. That organization said that health care workers, first responders, older Americans living in congregate settings, and people with underlying health conditions should be the first to receive a vaccine.

ACIP has said that phase 1b would include essential workers, including police officers and firefighters, and those in education, transportation, and food and agriculture sectors. Phase 1c would include adults with high-risk medical conditions and those aged 65 years or older.

This article first appeared on Medscape.com.

A federal advisory panel recommends that health care workers and residents of long-term care facilities be the first to receive a COVID-19 vaccine when one is authorized for use by the Food and Drug Administration.

The Centers for Disease Control and Prevention’s Advisory Committee on Immunization Practices voted 13-1 that both groups be in the highest-priority group for vaccination. As such, ACIP recommends that both be included in phase 1a of the committee’s allocation plan.

The recommendation now goes to CDC director Robert Redfield, MD, for approval. State health departments are expected to rely on the recommendation, but ultimately can make their own decisions on how to allocate vaccine in their states.

“We hope that this vote gets us all one step closer to the day when we can all feel safe again and when this pandemic is over,” said Nancy Messonnier, MD, director of the CDC’s National Center for Immunization and Respiratory Diseases, at today’s meeting.

Health care workers are defined as paid and unpaid individuals serving in health care settings who have the potential for direct or indirect exposure to patients or infectious materials. Long-term care residents are defined as adults who reside in facilities that provide a variety of services, including medical and personal care. Phase 1a would not include children who live in such facilities.

“Our goal in phase 1a with regard to health care personnel is to preserve the workforce and health care capacity regardless of where exposure occurs,” said ACIP panelist Grace Lee, MD, MPH, professor of paediatrics at Stanford (Calif.) University. Thus vaccination would cover clinical support staff, such as nursing assistants, environmental services staff, and food support staff.

“It is crucial to maintain our health care capacity,” said ACIP member Sharon Frey, MD, clinical director at the Center for Vaccine Development at Saint Louis University. “But it’s also important to prevent severe disease and death in the group that is at highest risk of those complications and that includes those in long-term care facilities.”

CDC staff said that staff and residents in those facilities account for 6% of COVID-19 cases and 40% of deaths.

But Helen Keipp Talbot, MD, associate professor of medicine at Vanderbilt University, Nashville, Tenn., voted against putting long-term care residents into the 1a phase. “We have traditionally tried a vaccine in a young healthy population and then hope it works in our frail older adults. So we enter this realm of ‘we hope it works and that it’s safe,’ and that concerns me on many levels particularly for this vaccine,” she said, noting that the vaccines closest to FDA authorization have not been studied in elderly adults who live in nursing homes or assisted living facilities.

She added: “I have no reservations for health care workers taking this vaccine.”
 

Prioritization could change

The phase 1a allocation fits within the “four ethical principles” outlined by ACIP and CDC staff Nov. 23: to maximize benefits and minimize harms, promote justice, mitigate health inequities, and promote transparency.

“My vote reflects maximum benefit, minimum harm, promoting justice and mitigating the health inequalities that exist with regard to distribution of this vaccine,” said ACIP Chair Jose Romero, MD. Romero, chief medical officer of the Arkansas Department of Health, voted in favor of the phase 1a plan.

He and other panelists noted, however, that allocation priorities could change after the FDA reviews and authorizes a vaccine.

The FDA’s Vaccines and Related Biological Products Advisory Committee (VRBPAC) will meet December 10 to review the Pfizer/BioNTech’s messenger RNA-based vaccine (BNT162b2). The companies filed for emergency use on November 20.

A second vaccine, made by Moderna, is not far behind. The company reported on Nov. 30 that its messenger RNA vaccine was 94.1% effective and filed for emergency use the same day. The FDA’s VRBPAC will review the safety and efficacy data for the Moderna vaccine on Dec. 17.

“If individual vaccines receive emergency use authorization, we will have more data to consider, and that could lead to revision of our prioritization,” said ACIP member Robert Atmar, MD, John S. Dunn Research Foundation Clinical Professor in Infectious Diseases at Baylor College of Medicine, Houston.

ACIP will meet again after the Dec. 10 FDA advisory panel. But it won’t recommend a product until after the FDA has authorized it, said Amanda Cohn, MD, senior advisor for vaccines at the CDC’s National Center for Immunization and Respiratory Diseases.
 

Staggered immunization subprioritization urged

The CDC staff said that given the potential that not enough vaccine will be available immediately, it was recommending that health care organizations plan on creating a hierarchy of prioritization within institutions. And, they also urged staggering vaccination for personnel in similar units or positions, citing potential systemic or other reactions among health care workers.

“Consider planning for personnel to have time away from clinical care if health care personnel experience systemic symptoms post vaccination,” said Sarah Oliver, MD, MSPH, from the CDC.

The CDC will soon be issuing guidance on how to handle systemic symptoms with health care workers, Dr. Oliver noted.

Some 40 million doses of the Pfizer/BioNTech and Moderna vaccines are expected to be available by the end of December, with 5 million to 10 million a week coming online after that, Dr. Cohn said. That means not all health care workers will be vaccinated immediately. That may require “subprioritization, but for a limited period of time,” she said.

Dr. Messonnier said that, even with limited supplies, most of the states have told the CDC that they think they can vaccinate all of their health care workers within 3 weeks – some in less time.

The ACIP allocation plan is similar to but not exactly the same as that issued by the National Academy of Sciences, Engineering, and Medicine, which issued recommendations in October. That organization said that health care workers, first responders, older Americans living in congregate settings, and people with underlying health conditions should be the first to receive a vaccine.

ACIP has said that phase 1b would include essential workers, including police officers and firefighters, and those in education, transportation, and food and agriculture sectors. Phase 1c would include adults with high-risk medical conditions and those aged 65 years or older.

This article first appeared on Medscape.com.

A federal advisory panel recommends that health care workers and residents of long-term care facilities be the first to receive a COVID-19 vaccine when one is authorized for use by the Food and Drug Administration.

The Centers for Disease Control and Prevention’s Advisory Committee on Immunization Practices voted 13-1 that both groups be in the highest-priority group for vaccination. As such, ACIP recommends that both be included in phase 1a of the committee’s allocation plan.

The recommendation now goes to CDC director Robert Redfield, MD, for approval. State health departments are expected to rely on the recommendation, but ultimately can make their own decisions on how to allocate vaccine in their states.

“We hope that this vote gets us all one step closer to the day when we can all feel safe again and when this pandemic is over,” said Nancy Messonnier, MD, director of the CDC’s National Center for Immunization and Respiratory Diseases, at today’s meeting.

Health care workers are defined as paid and unpaid individuals serving in health care settings who have the potential for direct or indirect exposure to patients or infectious materials. Long-term care residents are defined as adults who reside in facilities that provide a variety of services, including medical and personal care. Phase 1a would not include children who live in such facilities.

“Our goal in phase 1a with regard to health care personnel is to preserve the workforce and health care capacity regardless of where exposure occurs,” said ACIP panelist Grace Lee, MD, MPH, professor of paediatrics at Stanford (Calif.) University. Thus vaccination would cover clinical support staff, such as nursing assistants, environmental services staff, and food support staff.

“It is crucial to maintain our health care capacity,” said ACIP member Sharon Frey, MD, clinical director at the Center for Vaccine Development at Saint Louis University. “But it’s also important to prevent severe disease and death in the group that is at highest risk of those complications and that includes those in long-term care facilities.”

CDC staff said that staff and residents in those facilities account for 6% of COVID-19 cases and 40% of deaths.

But Helen Keipp Talbot, MD, associate professor of medicine at Vanderbilt University, Nashville, Tenn., voted against putting long-term care residents into the 1a phase. “We have traditionally tried a vaccine in a young healthy population and then hope it works in our frail older adults. So we enter this realm of ‘we hope it works and that it’s safe,’ and that concerns me on many levels particularly for this vaccine,” she said, noting that the vaccines closest to FDA authorization have not been studied in elderly adults who live in nursing homes or assisted living facilities.

She added: “I have no reservations for health care workers taking this vaccine.”
 

Prioritization could change

The phase 1a allocation fits within the “four ethical principles” outlined by ACIP and CDC staff Nov. 23: to maximize benefits and minimize harms, promote justice, mitigate health inequities, and promote transparency.

“My vote reflects maximum benefit, minimum harm, promoting justice and mitigating the health inequalities that exist with regard to distribution of this vaccine,” said ACIP Chair Jose Romero, MD. Romero, chief medical officer of the Arkansas Department of Health, voted in favor of the phase 1a plan.

He and other panelists noted, however, that allocation priorities could change after the FDA reviews and authorizes a vaccine.

The FDA’s Vaccines and Related Biological Products Advisory Committee (VRBPAC) will meet December 10 to review the Pfizer/BioNTech’s messenger RNA-based vaccine (BNT162b2). The companies filed for emergency use on November 20.

A second vaccine, made by Moderna, is not far behind. The company reported on Nov. 30 that its messenger RNA vaccine was 94.1% effective and filed for emergency use the same day. The FDA’s VRBPAC will review the safety and efficacy data for the Moderna vaccine on Dec. 17.

“If individual vaccines receive emergency use authorization, we will have more data to consider, and that could lead to revision of our prioritization,” said ACIP member Robert Atmar, MD, John S. Dunn Research Foundation Clinical Professor in Infectious Diseases at Baylor College of Medicine, Houston.

ACIP will meet again after the Dec. 10 FDA advisory panel. But it won’t recommend a product until after the FDA has authorized it, said Amanda Cohn, MD, senior advisor for vaccines at the CDC’s National Center for Immunization and Respiratory Diseases.
 

Staggered immunization subprioritization urged

The CDC staff said that given the potential that not enough vaccine will be available immediately, it was recommending that health care organizations plan on creating a hierarchy of prioritization within institutions. And, they also urged staggering vaccination for personnel in similar units or positions, citing potential systemic or other reactions among health care workers.

“Consider planning for personnel to have time away from clinical care if health care personnel experience systemic symptoms post vaccination,” said Sarah Oliver, MD, MSPH, from the CDC.

The CDC will soon be issuing guidance on how to handle systemic symptoms with health care workers, Dr. Oliver noted.

Some 40 million doses of the Pfizer/BioNTech and Moderna vaccines are expected to be available by the end of December, with 5 million to 10 million a week coming online after that, Dr. Cohn said. That means not all health care workers will be vaccinated immediately. That may require “subprioritization, but for a limited period of time,” she said.

Dr. Messonnier said that, even with limited supplies, most of the states have told the CDC that they think they can vaccinate all of their health care workers within 3 weeks – some in less time.

The ACIP allocation plan is similar to but not exactly the same as that issued by the National Academy of Sciences, Engineering, and Medicine, which issued recommendations in October. That organization said that health care workers, first responders, older Americans living in congregate settings, and people with underlying health conditions should be the first to receive a vaccine.

ACIP has said that phase 1b would include essential workers, including police officers and firefighters, and those in education, transportation, and food and agriculture sectors. Phase 1c would include adults with high-risk medical conditions and those aged 65 years or older.

This article first appeared on Medscape.com.

On Monday, members of an influential federal panel delved into the challenges ahead in deciding who will get the first doses of COVID-19 vaccines, including questions about which healthcare workers need those initial vaccinations the most.

The Advisory Committee on Immunization Practices (ACIP) of the Centers for Disease Control and Prevention (CDC) did not take any votes or seek to establish formal positions. Instead, the meeting served as a forum for experts to discuss the thorny issues ahead. The US Food and Drug Administration (FDA) could make a decision next month regarding clearance for the first COVID-19 vaccine.

An FDA advisory committee will meet December 10 to review the request for emergency use authorization (EUA) of a COVID-19 vaccine from Pfizer, in partnership with BioNTech. Moderna Inc said on November 16 that it expects to soon ask the FDA for an EUA of its rival COVID vaccine.

ACIP will face a two-part task after the FDA clears COVID-19 vaccines, said Nancy Messonnier, MD, director of the CDC’s National Center for Immunization and Respiratory Diseases. ACIP will need to first decide whether to recommend use of the vaccine and then address the “complicated and difficult” question of which groups should get the initial limited quantities.

“There aren’t any perfect decisions,” she told the ACIP members. “I know this is something that most of you didn’t anticipate doing, making these kinds of huge decisions in the midst of a pandemic.”

There has been considerable public discussion of prioritization of COVID-19 vaccines, including a set of recommendations offered by a special committee created by the National Academies of Sciences, Engineering and Medicine. In addition, CDC staff and members of ACIP outlined what they termed the “four ethical principles” meant to guide these decisions in a November 23 report in the agency’s Morbidity and Mortality Weekly Report. These four principles are to maximize benefits and minimize harms; promote justice; mitigate health inequities; and promote transparency.

But as the issuing of the first EUA nears, it falls to ACIP to move beyond endorsing broad goals. The panel will need to make decisions as to which groups will have to wait for COVID-19 vaccines.

ACIP members on Monday delved into these kinds of more detailed questions, using a proposed three-stage model as a discussion point.

In phase 1a of this model, healthcare workers and residents of long-term care facilities would be the first people to be vaccinated. Phase 1b would include those deemed essential workers, including police officers, firefighters, and those in education, transportation, food, and agriculture sectors. Phase 1c would include adults with high-risk medical conditions and those aged 65 years and older.

ACIP member Grace M. Lee, MD, MPH, of Stanford University, Stanford, California, questioned whether healthcare workers who are not seeing patients in person should wait to get the vaccines. There has been a marked rise in the use of telehealth during the pandemic, which has spared some clinicians from in-person COVID-19 patient visits in their practices.

“Close partnership with our public health colleagues will be critically important to make sure that we are not trying to vaccinate 100% of our healthcare workforce, if some proportion of our workforce can work from home,” Lee said.

ACIP member Pablo Sánchez, MD, of the Research Institute at Nationwide Children’s Hospital in Columbus, Ohio, concurred. Some clinicians, he noted, may have better access to personal protective equipment than others, he said.

“Unfortunately, not all healthcare workers are equal in terms of risk,” Sánchez said. “Within institutions, we’re going to have to prioritize which ones will get” the vaccine.

Clinicians may also make judgments about their own risk and need for early access to COVID-19 vaccinations, Sánchez said.

“I’m 66, and I’d rather give it to somebody much older and sicker than me,” he said.
 

Broader access

Fairly large populations will essentially be competing for limited doses of the first vaccines to reach the market.

The overlap is significant in the four priority groups put forward by CDC. The CDC staff estimated that about 21 million people would fall into the healthcare personnel category, which includes hospital staff, pharmacists, and those working in long-term care facilities. There are about 87 million people in the essential workers groups. More than 100 million adults in the United States, such as those with diabetes and cancers, fall into the high-risk medical conditions group. Another 53 million people are aged 65 and older.

Department of Health and Human Services Secretary Alex Azar on November 18 said the federal government expects to have about 40 million doses of these two vaccines by the end of December, which is enough to provide the two-dose regimen for about 20 million. If all goes as expected, Pfizer and Moderna will ramp up production.

Moderna has said that it expects by the end of this year to have approximately 20 million doses of its vaccine ready to ship in the United States and that it is on track to manufacture 500 million to 1 billion doses globally in 2021. Pfizer and BioNTech have said they expect to produce globally up to 50 million doses in 2020 and up to 1.3 billion doses by the end of 2021.

At the Monday meeting, several ACIP panelists stressed the need to ensure that essential workers get early doses of vaccines.

In many cases, these workers serve in jobs with significant public interaction and live in poor communities. They put themselves and their families at risk. Many of them lack the resources to take precautions available to those better able to isolate, said ACIP member Beth Bell, MD, MPH, of the University of Washington, Seattle, Washington.

“These essential workers are out there putting themselves at risk to allow the rest of us to socially distance,” she said. “Recognizing that not all of them may want to be vaccinated at this stage, we need to provide them with the opportunity early on in the process.”

In Bell’s view, the initial rollout of COVID-19 vaccines will send an important message about sharing this resource.

“If we’re serious about valuing equity, we need to have that baked in early on in the vaccination program,” she said.

Bell also said she was in favor of including people living in nursing homes in the initial wave of vaccinations. Concerns were raised about the frailty of this population.

“Given the mortality impact on the healthcare system from the number of nursing home residents that have been dying, I think on balance it makes sense to include them in phase 1a,” Bell said.

Other ACIP panelists said missteps with early vaccination of people in nursing homes could undermine faith in the treatments. Because of the ages and medical conditions of people in nursing homes, many of them may die after receiving the COVID-19 vaccine. Such deaths would not be associated with vaccine, but the medical community would not yet have evidence to disprove a connection.

There could be a backlash, with people falsely linking the death of a grandparent to the vaccine.

Fellow ACIP member Robert L. Atmar, MD, Baylor College of Medicine, Houston, Texas, was among those who had raised concerns about including people living in long-term care facilities in phase 1a. He said there are not yet enough data to judge the balance of benefits and harms of vaccination for this population.

The Pfizer and Moderna vaccines are “reactagenic,” meaning people may not feel well in the days after receiving the shots. The symptoms could lead to additional health evaluations of older people in nursing homes as clinicians try to figure out whether the patient’s reactions to the vaccine are caused by some condition or infection, Atmar said.

“Those of us who see these patients in the hospital recognize that there are often medical interventions that are done in the pursuit of a diagnosis, of a change in clinical status, that in and of themselves can lead to harm,” Atmar said.

Clinicians likely will have to encourage their patients of all ages to receive second doses of COVID-19 vaccines, despite the malaise they may provoke.

“We really need to make patients aware that this is not going to be a walk in the park. I mean, they’re going to know they had a vaccine, they’re probably not going to feel wonderful, but they’ve got to come back for that second dose,” said Sandra Adamson Fryhofer, MD, who represented the American Medical Association.

ACIP is expected to meet again to offer specific recommendations on the Pfizer and Moderna vaccines. ACIP’s recommendations trigger reimbursement processes, Azar said at a Tuesday press conference. ACIP’s work will inform decisions made by the federal government and governors about deploying shipments of COVID-19 vaccines, he said.

“At the end of the day, that is a decision, though, of the US government to make, which is where to recommend the prioritization,” Azar said. “It will be our nation’s governors in implementing the distribution plans to tell us” where to ship the vaccine.

This article first appeared on Medscape.com.

On Monday, members of an influential federal panel delved into the challenges ahead in deciding who will get the first doses of COVID-19 vaccines, including questions about which healthcare workers need those initial vaccinations the most.

The Advisory Committee on Immunization Practices (ACIP) of the Centers for Disease Control and Prevention (CDC) did not take any votes or seek to establish formal positions. Instead, the meeting served as a forum for experts to discuss the thorny issues ahead. The US Food and Drug Administration (FDA) could make a decision next month regarding clearance for the first COVID-19 vaccine.

An FDA advisory committee will meet December 10 to review the request for emergency use authorization (EUA) of a COVID-19 vaccine from Pfizer, in partnership with BioNTech. Moderna Inc said on November 16 that it expects to soon ask the FDA for an EUA of its rival COVID vaccine.

ACIP will face a two-part task after the FDA clears COVID-19 vaccines, said Nancy Messonnier, MD, director of the CDC’s National Center for Immunization and Respiratory Diseases. ACIP will need to first decide whether to recommend use of the vaccine and then address the “complicated and difficult” question of which groups should get the initial limited quantities.

“There aren’t any perfect decisions,” she told the ACIP members. “I know this is something that most of you didn’t anticipate doing, making these kinds of huge decisions in the midst of a pandemic.”

There has been considerable public discussion of prioritization of COVID-19 vaccines, including a set of recommendations offered by a special committee created by the National Academies of Sciences, Engineering and Medicine. In addition, CDC staff and members of ACIP outlined what they termed the “four ethical principles” meant to guide these decisions in a November 23 report in the agency’s Morbidity and Mortality Weekly Report. These four principles are to maximize benefits and minimize harms; promote justice; mitigate health inequities; and promote transparency.

But as the issuing of the first EUA nears, it falls to ACIP to move beyond endorsing broad goals. The panel will need to make decisions as to which groups will have to wait for COVID-19 vaccines.

ACIP members on Monday delved into these kinds of more detailed questions, using a proposed three-stage model as a discussion point.

In phase 1a of this model, healthcare workers and residents of long-term care facilities would be the first people to be vaccinated. Phase 1b would include those deemed essential workers, including police officers, firefighters, and those in education, transportation, food, and agriculture sectors. Phase 1c would include adults with high-risk medical conditions and those aged 65 years and older.

ACIP member Grace M. Lee, MD, MPH, of Stanford University, Stanford, California, questioned whether healthcare workers who are not seeing patients in person should wait to get the vaccines. There has been a marked rise in the use of telehealth during the pandemic, which has spared some clinicians from in-person COVID-19 patient visits in their practices.

“Close partnership with our public health colleagues will be critically important to make sure that we are not trying to vaccinate 100% of our healthcare workforce, if some proportion of our workforce can work from home,” Lee said.

ACIP member Pablo Sánchez, MD, of the Research Institute at Nationwide Children’s Hospital in Columbus, Ohio, concurred. Some clinicians, he noted, may have better access to personal protective equipment than others, he said.

“Unfortunately, not all healthcare workers are equal in terms of risk,” Sánchez said. “Within institutions, we’re going to have to prioritize which ones will get” the vaccine.

Clinicians may also make judgments about their own risk and need for early access to COVID-19 vaccinations, Sánchez said.

“I’m 66, and I’d rather give it to somebody much older and sicker than me,” he said.
 

Broader access

Fairly large populations will essentially be competing for limited doses of the first vaccines to reach the market.

The overlap is significant in the four priority groups put forward by CDC. The CDC staff estimated that about 21 million people would fall into the healthcare personnel category, which includes hospital staff, pharmacists, and those working in long-term care facilities. There are about 87 million people in the essential workers groups. More than 100 million adults in the United States, such as those with diabetes and cancers, fall into the high-risk medical conditions group. Another 53 million people are aged 65 and older.

Department of Health and Human Services Secretary Alex Azar on November 18 said the federal government expects to have about 40 million doses of these two vaccines by the end of December, which is enough to provide the two-dose regimen for about 20 million. If all goes as expected, Pfizer and Moderna will ramp up production.

Moderna has said that it expects by the end of this year to have approximately 20 million doses of its vaccine ready to ship in the United States and that it is on track to manufacture 500 million to 1 billion doses globally in 2021. Pfizer and BioNTech have said they expect to produce globally up to 50 million doses in 2020 and up to 1.3 billion doses by the end of 2021.

At the Monday meeting, several ACIP panelists stressed the need to ensure that essential workers get early doses of vaccines.

In many cases, these workers serve in jobs with significant public interaction and live in poor communities. They put themselves and their families at risk. Many of them lack the resources to take precautions available to those better able to isolate, said ACIP member Beth Bell, MD, MPH, of the University of Washington, Seattle, Washington.

“These essential workers are out there putting themselves at risk to allow the rest of us to socially distance,” she said. “Recognizing that not all of them may want to be vaccinated at this stage, we need to provide them with the opportunity early on in the process.”

In Bell’s view, the initial rollout of COVID-19 vaccines will send an important message about sharing this resource.

“If we’re serious about valuing equity, we need to have that baked in early on in the vaccination program,” she said.

Bell also said she was in favor of including people living in nursing homes in the initial wave of vaccinations. Concerns were raised about the frailty of this population.

“Given the mortality impact on the healthcare system from the number of nursing home residents that have been dying, I think on balance it makes sense to include them in phase 1a,” Bell said.

Other ACIP panelists said missteps with early vaccination of people in nursing homes could undermine faith in the treatments. Because of the ages and medical conditions of people in nursing homes, many of them may die after receiving the COVID-19 vaccine. Such deaths would not be associated with vaccine, but the medical community would not yet have evidence to disprove a connection.

There could be a backlash, with people falsely linking the death of a grandparent to the vaccine.

Fellow ACIP member Robert L. Atmar, MD, Baylor College of Medicine, Houston, Texas, was among those who had raised concerns about including people living in long-term care facilities in phase 1a. He said there are not yet enough data to judge the balance of benefits and harms of vaccination for this population.

The Pfizer and Moderna vaccines are “reactagenic,” meaning people may not feel well in the days after receiving the shots. The symptoms could lead to additional health evaluations of older people in nursing homes as clinicians try to figure out whether the patient’s reactions to the vaccine are caused by some condition or infection, Atmar said.

“Those of us who see these patients in the hospital recognize that there are often medical interventions that are done in the pursuit of a diagnosis, of a change in clinical status, that in and of themselves can lead to harm,” Atmar said.

Clinicians likely will have to encourage their patients of all ages to receive second doses of COVID-19 vaccines, despite the malaise they may provoke.

“We really need to make patients aware that this is not going to be a walk in the park. I mean, they’re going to know they had a vaccine, they’re probably not going to feel wonderful, but they’ve got to come back for that second dose,” said Sandra Adamson Fryhofer, MD, who represented the American Medical Association.

ACIP is expected to meet again to offer specific recommendations on the Pfizer and Moderna vaccines. ACIP’s recommendations trigger reimbursement processes, Azar said at a Tuesday press conference. ACIP’s work will inform decisions made by the federal government and governors about deploying shipments of COVID-19 vaccines, he said.

“At the end of the day, that is a decision, though, of the US government to make, which is where to recommend the prioritization,” Azar said. “It will be our nation’s governors in implementing the distribution plans to tell us” where to ship the vaccine.

This article first appeared on Medscape.com.

On Monday, members of an influential federal panel delved into the challenges ahead in deciding who will get the first doses of COVID-19 vaccines, including questions about which healthcare workers need those initial vaccinations the most.

The Advisory Committee on Immunization Practices (ACIP) of the Centers for Disease Control and Prevention (CDC) did not take any votes or seek to establish formal positions. Instead, the meeting served as a forum for experts to discuss the thorny issues ahead. The US Food and Drug Administration (FDA) could make a decision next month regarding clearance for the first COVID-19 vaccine.

An FDA advisory committee will meet December 10 to review the request for emergency use authorization (EUA) of a COVID-19 vaccine from Pfizer, in partnership with BioNTech. Moderna Inc said on November 16 that it expects to soon ask the FDA for an EUA of its rival COVID vaccine.

ACIP will face a two-part task after the FDA clears COVID-19 vaccines, said Nancy Messonnier, MD, director of the CDC’s National Center for Immunization and Respiratory Diseases. ACIP will need to first decide whether to recommend use of the vaccine and then address the “complicated and difficult” question of which groups should get the initial limited quantities.

“There aren’t any perfect decisions,” she told the ACIP members. “I know this is something that most of you didn’t anticipate doing, making these kinds of huge decisions in the midst of a pandemic.”

There has been considerable public discussion of prioritization of COVID-19 vaccines, including a set of recommendations offered by a special committee created by the National Academies of Sciences, Engineering and Medicine. In addition, CDC staff and members of ACIP outlined what they termed the “four ethical principles” meant to guide these decisions in a November 23 report in the agency’s Morbidity and Mortality Weekly Report. These four principles are to maximize benefits and minimize harms; promote justice; mitigate health inequities; and promote transparency.

But as the issuing of the first EUA nears, it falls to ACIP to move beyond endorsing broad goals. The panel will need to make decisions as to which groups will have to wait for COVID-19 vaccines.

ACIP members on Monday delved into these kinds of more detailed questions, using a proposed three-stage model as a discussion point.

In phase 1a of this model, healthcare workers and residents of long-term care facilities would be the first people to be vaccinated. Phase 1b would include those deemed essential workers, including police officers, firefighters, and those in education, transportation, food, and agriculture sectors. Phase 1c would include adults with high-risk medical conditions and those aged 65 years and older.

ACIP member Grace M. Lee, MD, MPH, of Stanford University, Stanford, California, questioned whether healthcare workers who are not seeing patients in person should wait to get the vaccines. There has been a marked rise in the use of telehealth during the pandemic, which has spared some clinicians from in-person COVID-19 patient visits in their practices.

“Close partnership with our public health colleagues will be critically important to make sure that we are not trying to vaccinate 100% of our healthcare workforce, if some proportion of our workforce can work from home,” Lee said.

ACIP member Pablo Sánchez, MD, of the Research Institute at Nationwide Children’s Hospital in Columbus, Ohio, concurred. Some clinicians, he noted, may have better access to personal protective equipment than others, he said.

“Unfortunately, not all healthcare workers are equal in terms of risk,” Sánchez said. “Within institutions, we’re going to have to prioritize which ones will get” the vaccine.

Clinicians may also make judgments about their own risk and need for early access to COVID-19 vaccinations, Sánchez said.

“I’m 66, and I’d rather give it to somebody much older and sicker than me,” he said.
 

Broader access

Fairly large populations will essentially be competing for limited doses of the first vaccines to reach the market.

The overlap is significant in the four priority groups put forward by CDC. The CDC staff estimated that about 21 million people would fall into the healthcare personnel category, which includes hospital staff, pharmacists, and those working in long-term care facilities. There are about 87 million people in the essential workers groups. More than 100 million adults in the United States, such as those with diabetes and cancers, fall into the high-risk medical conditions group. Another 53 million people are aged 65 and older.

Department of Health and Human Services Secretary Alex Azar on November 18 said the federal government expects to have about 40 million doses of these two vaccines by the end of December, which is enough to provide the two-dose regimen for about 20 million. If all goes as expected, Pfizer and Moderna will ramp up production.

Moderna has said that it expects by the end of this year to have approximately 20 million doses of its vaccine ready to ship in the United States and that it is on track to manufacture 500 million to 1 billion doses globally in 2021. Pfizer and BioNTech have said they expect to produce globally up to 50 million doses in 2020 and up to 1.3 billion doses by the end of 2021.

At the Monday meeting, several ACIP panelists stressed the need to ensure that essential workers get early doses of vaccines.

In many cases, these workers serve in jobs with significant public interaction and live in poor communities. They put themselves and their families at risk. Many of them lack the resources to take precautions available to those better able to isolate, said ACIP member Beth Bell, MD, MPH, of the University of Washington, Seattle, Washington.

“These essential workers are out there putting themselves at risk to allow the rest of us to socially distance,” she said. “Recognizing that not all of them may want to be vaccinated at this stage, we need to provide them with the opportunity early on in the process.”

In Bell’s view, the initial rollout of COVID-19 vaccines will send an important message about sharing this resource.

“If we’re serious about valuing equity, we need to have that baked in early on in the vaccination program,” she said.

Bell also said she was in favor of including people living in nursing homes in the initial wave of vaccinations. Concerns were raised about the frailty of this population.

“Given the mortality impact on the healthcare system from the number of nursing home residents that have been dying, I think on balance it makes sense to include them in phase 1a,” Bell said.

Other ACIP panelists said missteps with early vaccination of people in nursing homes could undermine faith in the treatments. Because of the ages and medical conditions of people in nursing homes, many of them may die after receiving the COVID-19 vaccine. Such deaths would not be associated with vaccine, but the medical community would not yet have evidence to disprove a connection.

There could be a backlash, with people falsely linking the death of a grandparent to the vaccine.

Fellow ACIP member Robert L. Atmar, MD, Baylor College of Medicine, Houston, Texas, was among those who had raised concerns about including people living in long-term care facilities in phase 1a. He said there are not yet enough data to judge the balance of benefits and harms of vaccination for this population.

The Pfizer and Moderna vaccines are “reactagenic,” meaning people may not feel well in the days after receiving the shots. The symptoms could lead to additional health evaluations of older people in nursing homes as clinicians try to figure out whether the patient’s reactions to the vaccine are caused by some condition or infection, Atmar said.

“Those of us who see these patients in the hospital recognize that there are often medical interventions that are done in the pursuit of a diagnosis, of a change in clinical status, that in and of themselves can lead to harm,” Atmar said.

Clinicians likely will have to encourage their patients of all ages to receive second doses of COVID-19 vaccines, despite the malaise they may provoke.

“We really need to make patients aware that this is not going to be a walk in the park. I mean, they’re going to know they had a vaccine, they’re probably not going to feel wonderful, but they’ve got to come back for that second dose,” said Sandra Adamson Fryhofer, MD, who represented the American Medical Association.

ACIP is expected to meet again to offer specific recommendations on the Pfizer and Moderna vaccines. ACIP’s recommendations trigger reimbursement processes, Azar said at a Tuesday press conference. ACIP’s work will inform decisions made by the federal government and governors about deploying shipments of COVID-19 vaccines, he said.

“At the end of the day, that is a decision, though, of the US government to make, which is where to recommend the prioritization,” Azar said. “It will be our nation’s governors in implementing the distribution plans to tell us” where to ship the vaccine.

This article first appeared on Medscape.com.

The largest U.S. physician organization on Tuesday took a step to prepare for future payments for administration of two leading COVID-19 vaccine candidates, publishing new billing codes tailored to track each use of these medications.

The American Medical Association updated its CPT code set to reflect the expected future availability of COVID-19 vaccines. The new codes apply to the experimental vaccine being developed by Pfizer, in collaboration with a smaller German firm BioNTech, and to the similar product expected from Moderna, according to an AMA press release.

Positive news has emerged this week about both of these vaccines, which were developed using a newer – and as yet unproven – approach. They seek to use messenger RNA to instruct cells to produce a target protein for SARS-CoV-2.

New York–based Pfizer on Monday announced interim phase 3 data that was widely viewed as promising. Pfizer said the vaccine appeared to be 90% effective in preventing COVID-19 in trial volunteers who were without evidence of prior infection of the virus.

In a press release, Pfizer said it plans to ask the Food and Drug Administration to consider a special clearance, known as an emergency-use authorization, “soon after” a safety milestone is achieved in its vaccine trial. That milestone could be reached this month.

Moderna said it was on track to report early data from a late-stage trial of its experimental coronavirus vaccine later this month, and could file with the FDA for an emergency-use authorization in early December, according to a Reuters report.

The severity of the global pandemic has put the FDA under pressure to move quickly on approval of COVID-19 vaccines, based on limited data, while also working to make sure these products are safe. The creation of CPT codes for each of two coronavirus vaccines, as well as accompanying administration codes, will set up a way to keep tabs on each dose of each of these shots, the AMA said.

American Medical Association

“Correlating each coronavirus vaccine with its own unique CPT code provides analytical advantages to help track, allocate and optimize resources as an immunization program ramps up in the United States,” AMA President Susan R. Bailey, MD, said in the release.

AMA plans to introduce more vaccine-specific CPT codes as more vaccine candidates approach FDA review. These vaccine-specific CPT codes can go into effect only after the FDA grants a clearance.

The newly created Category I CPT codes and long descriptors for the vaccine products are:
 

• 91300; severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3mL dosage, diluent reconstituted, for intramuscular use (Pfizer/BioNTech)
• 91301; severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5mL dosage, for intramuscular use (Moderna)

These two administrative codes would apply to the Pfizer-BioNTech shot:

• 0001A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3 mL dosage, diluent reconstituted; first dose.
• 0002A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3 mL dosage, diluent reconstituted; second dose.

And these two administrative codes would apply to the Moderna shot:

• 0011A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5 mL dosage; first dose.
• 0012A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5 mL dosage; second dose.

A version of this article originally appeared on Medscape.com.

The largest U.S. physician organization on Tuesday took a step to prepare for future payments for administration of two leading COVID-19 vaccine candidates, publishing new billing codes tailored to track each use of these medications.

The American Medical Association updated its CPT code set to reflect the expected future availability of COVID-19 vaccines. The new codes apply to the experimental vaccine being developed by Pfizer, in collaboration with a smaller German firm BioNTech, and to the similar product expected from Moderna, according to an AMA press release.

Positive news has emerged this week about both of these vaccines, which were developed using a newer – and as yet unproven – approach. They seek to use messenger RNA to instruct cells to produce a target protein for SARS-CoV-2.

New York–based Pfizer on Monday announced interim phase 3 data that was widely viewed as promising. Pfizer said the vaccine appeared to be 90% effective in preventing COVID-19 in trial volunteers who were without evidence of prior infection of the virus.

In a press release, Pfizer said it plans to ask the Food and Drug Administration to consider a special clearance, known as an emergency-use authorization, “soon after” a safety milestone is achieved in its vaccine trial. That milestone could be reached this month.

Moderna said it was on track to report early data from a late-stage trial of its experimental coronavirus vaccine later this month, and could file with the FDA for an emergency-use authorization in early December, according to a Reuters report.

The severity of the global pandemic has put the FDA under pressure to move quickly on approval of COVID-19 vaccines, based on limited data, while also working to make sure these products are safe. The creation of CPT codes for each of two coronavirus vaccines, as well as accompanying administration codes, will set up a way to keep tabs on each dose of each of these shots, the AMA said.

American Medical Association

“Correlating each coronavirus vaccine with its own unique CPT code provides analytical advantages to help track, allocate and optimize resources as an immunization program ramps up in the United States,” AMA President Susan R. Bailey, MD, said in the release.

AMA plans to introduce more vaccine-specific CPT codes as more vaccine candidates approach FDA review. These vaccine-specific CPT codes can go into effect only after the FDA grants a clearance.

The newly created Category I CPT codes and long descriptors for the vaccine products are:
 

• 91300; severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3mL dosage, diluent reconstituted, for intramuscular use (Pfizer/BioNTech)
• 91301; severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5mL dosage, for intramuscular use (Moderna)

These two administrative codes would apply to the Pfizer-BioNTech shot:

• 0001A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3 mL dosage, diluent reconstituted; first dose.
• 0002A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3 mL dosage, diluent reconstituted; second dose.

And these two administrative codes would apply to the Moderna shot:

• 0011A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5 mL dosage; first dose.
• 0012A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5 mL dosage; second dose.

A version of this article originally appeared on Medscape.com.

The largest U.S. physician organization on Tuesday took a step to prepare for future payments for administration of two leading COVID-19 vaccine candidates, publishing new billing codes tailored to track each use of these medications.

The American Medical Association updated its CPT code set to reflect the expected future availability of COVID-19 vaccines. The new codes apply to the experimental vaccine being developed by Pfizer, in collaboration with a smaller German firm BioNTech, and to the similar product expected from Moderna, according to an AMA press release.

Positive news has emerged this week about both of these vaccines, which were developed using a newer – and as yet unproven – approach. They seek to use messenger RNA to instruct cells to produce a target protein for SARS-CoV-2.

New York–based Pfizer on Monday announced interim phase 3 data that was widely viewed as promising. Pfizer said the vaccine appeared to be 90% effective in preventing COVID-19 in trial volunteers who were without evidence of prior infection of the virus.

In a press release, Pfizer said it plans to ask the Food and Drug Administration to consider a special clearance, known as an emergency-use authorization, “soon after” a safety milestone is achieved in its vaccine trial. That milestone could be reached this month.

Moderna said it was on track to report early data from a late-stage trial of its experimental coronavirus vaccine later this month, and could file with the FDA for an emergency-use authorization in early December, according to a Reuters report.

The severity of the global pandemic has put the FDA under pressure to move quickly on approval of COVID-19 vaccines, based on limited data, while also working to make sure these products are safe. The creation of CPT codes for each of two coronavirus vaccines, as well as accompanying administration codes, will set up a way to keep tabs on each dose of each of these shots, the AMA said.

American Medical Association

“Correlating each coronavirus vaccine with its own unique CPT code provides analytical advantages to help track, allocate and optimize resources as an immunization program ramps up in the United States,” AMA President Susan R. Bailey, MD, said in the release.

AMA plans to introduce more vaccine-specific CPT codes as more vaccine candidates approach FDA review. These vaccine-specific CPT codes can go into effect only after the FDA grants a clearance.

The newly created Category I CPT codes and long descriptors for the vaccine products are:
 

• 91300; severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3mL dosage, diluent reconstituted, for intramuscular use (Pfizer/BioNTech)
• 91301; severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5mL dosage, for intramuscular use (Moderna)

These two administrative codes would apply to the Pfizer-BioNTech shot:

• 0001A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3 mL dosage, diluent reconstituted; first dose.
• 0002A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 30 mcg/0.3 mL dosage, diluent reconstituted; second dose.

And these two administrative codes would apply to the Moderna shot:

• 0011A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5 mL dosage; first dose.
• 0012A; Immunization administration by intramuscular injection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) vaccine, mRNA-LNP, spike protein, preservative free, 100 mcg/0.5 mL dosage; second dose.

A version of this article originally appeared on Medscape.com.

The US Food and Drug Administration (FDA) issued an emergency use authorization (EUA) Nov. 9 for the investigational monoclonal antibody therapy bamlanivimab (Eli Lilly) to treat adults and children with mild to moderate COVID-19.

The monoclonal antibody therapy has emergency authorization for treating patients who have tested positive for SARS-CoV-2 infection and who are considered to be at high risk for progression to severe COVID-19 or hospitalization. To be eligible for treatment with bamlanivimab, patients must be at least 12 years of age and weigh at least 40 kg (approximately 88 lb). The agency notes that this includes patients aged 65 years and older or people with certain chronic conditions.

Bamlanivimab is not authorized for use in patients who are hospitalized or who require oxygen therapy because of COVID-19. The FDA’s action comes less than 2 weeks after Eli Lilly halted the ACTIV-3 study of the therapy for severe, hospitalized COVID-19 patients after evidence showed that adding the antibody therapy to standard care did not improve outcomes over standard care alone for patients with advanced COVID-19.

The government contract with Eli Lilly involves the purchase of 300,000 doses through December, with the option to procure another 650,000 doses through June 2021.

Because of Operation Warp Speed, “we have supplies to distribute now. Product distribution will begin this week,” US Health & Human Services (HHS) Secretary Alex Azar said at a news conference today.

“We talked about building the bridge to safe and effective vaccines” for COVID-19, Azar added. “With this therapeutic, the bridge is taking shape.”

Bamlanivimab 700 mg will be administered as a 1-hour infusion followed by a 1-hour observation period for detecting any infusion-related side effects. The authorized dose is 700 mg, which was on the lower end of the dose range evaluated in studies.

During the press conference, a reporter asked whether the lower dose was chosen in order that more doses of the antibody could be made available. “The lower dose is a rational choice in this situation because we don’t want to give more of a drug than you need,” said Janet Woodcock, MD, the therapeutics lead for Operation Warp Speed. “I think we could probably go lower.”

Bamlanivimab works by attaching to the virus and blocking its entry into the cells and possibly by helping the patients’ immune system clear the virus, said Woodcock, who is also director of the FDA’s Center for Drug Evaluation and Research.

“The goal is to treat high-risk people as soon as possible after they show symptoms and are diagnosed,” she added.
 

Infusions an initial challenge?

There could be some logistic challenges at first because the antibody is administered via infusion. “We expect there will initially be a challenge in administering ... these infusions and setting up infusion centers,” Woodcock said.

Outpatient intravenous infusions are normally performed at infusion centers for patients with cancer and immune disorders, she noted. “You really don’t want them mixing with people who have COVID-19 disease, so we will need to set up separate sites.”

Bamlanivimab will be provided free of cost to patients, Azar said. Patients should be aware that coinsurance may be required for the infusion.
 

“Fair and equitable” distribution planned

During phase 1 of distribution, the agent will first be allocated to hospitals and hospital-affiliated locations only, John Redd, MD, MPH, chief medical officer, Office of the Assistant Secretary for Preparedness and Response at HHS, said at the press conference.

During phase 2, “there will be expanded distribution to outpatient sites,” he said. In an effort to keep the process transparent, a new website features the latest updates on the distribution of bamlanivimab.

Allocation will be based on two factors: the number of new cases reported in a state or territory in the prior 7 days, and rates of COVID-19 hospitalization during the same period.

Asked why the government would determine distribution of the antibody on the basis of the number of hospitalized patients when the indication includes prevention of admission, Woodcock replied that hospitalization is a surrogate measure that can reflect risk factors in a particular state population, such as obesity, diabetes, or the proportion of older people.

Furthermore, the confirmed cases are a “leading indicator,” she said, that can help identify a steep rise in COVID-19 cases that could indicate more hospitalizations are likely soon. “We don’t want to miss that.”
 

Data underlying the EUA decision

A decrease in hospitalizations or emergency department visits within 28 days of treatment in preclinical studies was “the most important evidence that bamlanivimab may be effective,” the agency noted in the press release announcing the EUA. Among patients at high risk for progression, 3% required such interventions, compared with 10% of placebo-treated patients.

Potential side effects of bamlanivimab include anaphylaxis, infusion-related reactions, nausea, diarrhea, dizziness, headache, itching, and vomiting.

“As illustrated by today’s action, the FDA remains committed to expediting the development and availability of potential COVID-19 treatments and providing sick patients timely access to new therapies where appropriate,” FDA Commissioner Stephen M. Hahn, MD, said in the news release.

Healthcare providers can download a detailed FDA fact sheet on the EUA for bamlanivimab, which includes dosing instructions.
 

This article first appeared on Medscape.com.

The US Food and Drug Administration (FDA) issued an emergency use authorization (EUA) Nov. 9 for the investigational monoclonal antibody therapy bamlanivimab (Eli Lilly) to treat adults and children with mild to moderate COVID-19.

The monoclonal antibody therapy has emergency authorization for treating patients who have tested positive for SARS-CoV-2 infection and who are considered to be at high risk for progression to severe COVID-19 or hospitalization. To be eligible for treatment with bamlanivimab, patients must be at least 12 years of age and weigh at least 40 kg (approximately 88 lb). The agency notes that this includes patients aged 65 years and older or people with certain chronic conditions.

Bamlanivimab is not authorized for use in patients who are hospitalized or who require oxygen therapy because of COVID-19. The FDA’s action comes less than 2 weeks after Eli Lilly halted the ACTIV-3 study of the therapy for severe, hospitalized COVID-19 patients after evidence showed that adding the antibody therapy to standard care did not improve outcomes over standard care alone for patients with advanced COVID-19.

The government contract with Eli Lilly involves the purchase of 300,000 doses through December, with the option to procure another 650,000 doses through June 2021.

Because of Operation Warp Speed, “we have supplies to distribute now. Product distribution will begin this week,” US Health & Human Services (HHS) Secretary Alex Azar said at a news conference today.

“We talked about building the bridge to safe and effective vaccines” for COVID-19, Azar added. “With this therapeutic, the bridge is taking shape.”

Bamlanivimab 700 mg will be administered as a 1-hour infusion followed by a 1-hour observation period for detecting any infusion-related side effects. The authorized dose is 700 mg, which was on the lower end of the dose range evaluated in studies.

During the press conference, a reporter asked whether the lower dose was chosen in order that more doses of the antibody could be made available. “The lower dose is a rational choice in this situation because we don’t want to give more of a drug than you need,” said Janet Woodcock, MD, the therapeutics lead for Operation Warp Speed. “I think we could probably go lower.”

Bamlanivimab works by attaching to the virus and blocking its entry into the cells and possibly by helping the patients’ immune system clear the virus, said Woodcock, who is also director of the FDA’s Center for Drug Evaluation and Research.

“The goal is to treat high-risk people as soon as possible after they show symptoms and are diagnosed,” she added.
 

Infusions an initial challenge?

There could be some logistic challenges at first because the antibody is administered via infusion. “We expect there will initially be a challenge in administering ... these infusions and setting up infusion centers,” Woodcock said.

Outpatient intravenous infusions are normally performed at infusion centers for patients with cancer and immune disorders, she noted. “You really don’t want them mixing with people who have COVID-19 disease, so we will need to set up separate sites.”

Bamlanivimab will be provided free of cost to patients, Azar said. Patients should be aware that coinsurance may be required for the infusion.
 

“Fair and equitable” distribution planned

During phase 1 of distribution, the agent will first be allocated to hospitals and hospital-affiliated locations only, John Redd, MD, MPH, chief medical officer, Office of the Assistant Secretary for Preparedness and Response at HHS, said at the press conference.

During phase 2, “there will be expanded distribution to outpatient sites,” he said. In an effort to keep the process transparent, a new website features the latest updates on the distribution of bamlanivimab.

Allocation will be based on two factors: the number of new cases reported in a state or territory in the prior 7 days, and rates of COVID-19 hospitalization during the same period.

Asked why the government would determine distribution of the antibody on the basis of the number of hospitalized patients when the indication includes prevention of admission, Woodcock replied that hospitalization is a surrogate measure that can reflect risk factors in a particular state population, such as obesity, diabetes, or the proportion of older people.

Furthermore, the confirmed cases are a “leading indicator,” she said, that can help identify a steep rise in COVID-19 cases that could indicate more hospitalizations are likely soon. “We don’t want to miss that.”
 

Data underlying the EUA decision

A decrease in hospitalizations or emergency department visits within 28 days of treatment in preclinical studies was “the most important evidence that bamlanivimab may be effective,” the agency noted in the press release announcing the EUA. Among patients at high risk for progression, 3% required such interventions, compared with 10% of placebo-treated patients.

Potential side effects of bamlanivimab include anaphylaxis, infusion-related reactions, nausea, diarrhea, dizziness, headache, itching, and vomiting.

“As illustrated by today’s action, the FDA remains committed to expediting the development and availability of potential COVID-19 treatments and providing sick patients timely access to new therapies where appropriate,” FDA Commissioner Stephen M. Hahn, MD, said in the news release.

Healthcare providers can download a detailed FDA fact sheet on the EUA for bamlanivimab, which includes dosing instructions.
 

This article first appeared on Medscape.com.

The US Food and Drug Administration (FDA) issued an emergency use authorization (EUA) Nov. 9 for the investigational monoclonal antibody therapy bamlanivimab (Eli Lilly) to treat adults and children with mild to moderate COVID-19.

The monoclonal antibody therapy has emergency authorization for treating patients who have tested positive for SARS-CoV-2 infection and who are considered to be at high risk for progression to severe COVID-19 or hospitalization. To be eligible for treatment with bamlanivimab, patients must be at least 12 years of age and weigh at least 40 kg (approximately 88 lb). The agency notes that this includes patients aged 65 years and older or people with certain chronic conditions.

Bamlanivimab is not authorized for use in patients who are hospitalized or who require oxygen therapy because of COVID-19. The FDA’s action comes less than 2 weeks after Eli Lilly halted the ACTIV-3 study of the therapy for severe, hospitalized COVID-19 patients after evidence showed that adding the antibody therapy to standard care did not improve outcomes over standard care alone for patients with advanced COVID-19.

The government contract with Eli Lilly involves the purchase of 300,000 doses through December, with the option to procure another 650,000 doses through June 2021.

Because of Operation Warp Speed, “we have supplies to distribute now. Product distribution will begin this week,” US Health & Human Services (HHS) Secretary Alex Azar said at a news conference today.

“We talked about building the bridge to safe and effective vaccines” for COVID-19, Azar added. “With this therapeutic, the bridge is taking shape.”

Bamlanivimab 700 mg will be administered as a 1-hour infusion followed by a 1-hour observation period for detecting any infusion-related side effects. The authorized dose is 700 mg, which was on the lower end of the dose range evaluated in studies.

During the press conference, a reporter asked whether the lower dose was chosen in order that more doses of the antibody could be made available. “The lower dose is a rational choice in this situation because we don’t want to give more of a drug than you need,” said Janet Woodcock, MD, the therapeutics lead for Operation Warp Speed. “I think we could probably go lower.”

Bamlanivimab works by attaching to the virus and blocking its entry into the cells and possibly by helping the patients’ immune system clear the virus, said Woodcock, who is also director of the FDA’s Center for Drug Evaluation and Research.

“The goal is to treat high-risk people as soon as possible after they show symptoms and are diagnosed,” she added.
 

Infusions an initial challenge?

There could be some logistic challenges at first because the antibody is administered via infusion. “We expect there will initially be a challenge in administering ... these infusions and setting up infusion centers,” Woodcock said.

Outpatient intravenous infusions are normally performed at infusion centers for patients with cancer and immune disorders, she noted. “You really don’t want them mixing with people who have COVID-19 disease, so we will need to set up separate sites.”

Bamlanivimab will be provided free of cost to patients, Azar said. Patients should be aware that coinsurance may be required for the infusion.
 

“Fair and equitable” distribution planned

During phase 1 of distribution, the agent will first be allocated to hospitals and hospital-affiliated locations only, John Redd, MD, MPH, chief medical officer, Office of the Assistant Secretary for Preparedness and Response at HHS, said at the press conference.

During phase 2, “there will be expanded distribution to outpatient sites,” he said. In an effort to keep the process transparent, a new website features the latest updates on the distribution of bamlanivimab.

Allocation will be based on two factors: the number of new cases reported in a state or territory in the prior 7 days, and rates of COVID-19 hospitalization during the same period.

Asked why the government would determine distribution of the antibody on the basis of the number of hospitalized patients when the indication includes prevention of admission, Woodcock replied that hospitalization is a surrogate measure that can reflect risk factors in a particular state population, such as obesity, diabetes, or the proportion of older people.

Furthermore, the confirmed cases are a “leading indicator,” she said, that can help identify a steep rise in COVID-19 cases that could indicate more hospitalizations are likely soon. “We don’t want to miss that.”
 

Data underlying the EUA decision

A decrease in hospitalizations or emergency department visits within 28 days of treatment in preclinical studies was “the most important evidence that bamlanivimab may be effective,” the agency noted in the press release announcing the EUA. Among patients at high risk for progression, 3% required such interventions, compared with 10% of placebo-treated patients.

Potential side effects of bamlanivimab include anaphylaxis, infusion-related reactions, nausea, diarrhea, dizziness, headache, itching, and vomiting.

“As illustrated by today’s action, the FDA remains committed to expediting the development and availability of potential COVID-19 treatments and providing sick patients timely access to new therapies where appropriate,” FDA Commissioner Stephen M. Hahn, MD, said in the news release.

Healthcare providers can download a detailed FDA fact sheet on the EUA for bamlanivimab, which includes dosing instructions.
 

This article first appeared on Medscape.com.