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CDC chief overrules panel, OKs boosters for health care workers
The CDC’s Advisory Committee on Immunization Practices earlier Thursday voted to allow several groups of Americans to get a booster shot, but voted not to recommend it for adults age 18 to 64 who live or work in a place where the risk of COVID-19 is high. That would have included health care workers and other frontline employees.
But CDC Director Rochelle Walensky, MD, decided to reverse that recommendation and include the 18-to-64-year-olds in her final decision.
“As CDC Director, it is my job to recognize where our actions can have the greatest impact,” Dr. Walensky said in a statement late Thursday night, according to published reports. “At CDC, we are tasked with analyzing complex, often imperfect data to make concrete recommendations that optimize health. In a pandemic, even with uncertainty, we must take actions that we anticipate will do the greatest good.”
Dr. Walensky agreed with the rest of the advisory committee's decisions, which included recommendations that the following groups also be eligible for a booster shot:
- Adults ages 65 and up and residents of long-term care facilities
- Adults ages 50 to 64 who have an underlying medical condition that may increase their risk from a COVID infection
- Adults ages 18 to 49 who may be at increased risk from a COVID-19 infection because of an underlying medical condition, if a person feels like they need one based on a consideration of their individual benefit and risks.
About 26 million Americans are at least 6 months past the last dose of the Pfizer vaccines, making them eligible to receive a third dose. About 13.6 million of them are over the age of 65. Another 5.3 million are ages 50 to 64.
In making the recommendations, the committee left out healthcare workers. This was a departure from the Food and Drug Administration’s authorization which included boosters for those 65 and over, and for people 18 through 64 years of age who are at high risk for severe illness from the coronavirus, including essential workers – such as those in healthcare -- whose jobs increase their risk for infection.
This is the group Dr. Walensky added to the eligible list on her own.
Committee members “did not buy the need in occupational or institutional settings,” said William Schaffner, MD, an infectious disease specialist at Vanderbilt University in Nashville. Dr. Schaffner sits on the ACIP workgroup that considered the evidence behind boosters. He said that he would have voted yes to offer boosters to healthcare and other essential workers.
“There was a real split in the committee,” he said.
The vote on boosters for healthcare and other high-risk workers was rejected 9 to 6.
“I think that there is ample evidence that people such as healthcare workers do not have repeated exposure in the workplace,” said Beth Bell, MD, a clinical professor at the University of Washington. “They’re using PPE as they should and they’re following the other policies within the healthcare setting. There’s lots of evidence that suggest that health care workers who become infected become infected because of exposures in the community.”
She was not alone in feeling cautious.
“I think this is an extremely slippery slope,” said Sarah Long, MD, a pediatric infectious disease specialist at Drexel University in Philadelphia, before her vote to reject boosters for healthcare and other high-risk workers.
“We might as well just say, ‘Give it to everybody 18 and over.’ We have an extremely effective vaccine. It’s like saying it’s not working, and it is working.”
The committee saw data showing that all of the vaccines remain highly protective against hospitalization and death for all age groups, though protection against getting sick with COVID has waned slightly over time and with the dominance of the more contagious Delta variant. Those at highest risk for a severe breakthrough infection — those that cause hospitalization or death — are older adults.
How much will the U.S. benefit from boosters?
Some felt squeamish about broadly recommending boosters at all.
“We have too much hope on the line with these boosters,” said James Loehr, MD, who is a family physician in Ithaca, N.Y. Dr. Loehr said he felt the goal of giving boosters in the United States should be to decrease hospitalizations, and he felt they would, but that the impact would likely be smaller than appreciated.
Based on his calculations of the benefits of boosters for each age group, Dr. Loehr said if boosters were given to all 13 million seniors previously vaccinated with the Pfizer vaccine, we might prevent 200 hospitalizations a day, “which would be a lot,” he noted. But, he said, “considering that we have 10,000 hospitalizations a day now, it’s probably not that much.”
Others agreed.
“I really think this is a solution looking for a problem,” said Jason Goldman, MD, an associate professor at Florida Atlantic University who was representing the American College of Physicians. “You know, I don’t think it’s going to address the issue of the pandemic. I really think it’s just going to create more confusion on the provider from the position of implementation, and I really think it’s going really far afield of the data.”
ACIP Chair Grace Lee, MD, a pediatric infectious disease specialist at Stanford, said she had cared for children who had died of COVID.
“I can tell you that their family members really wished they had extra protection for their kids, because they weren’t symptomatic. Nobody else was sick at home,” she said.
Dr. Lee said for her, access was paramount, and she was in favor of expanding access to boosters for as many people as possible.
Next steps
People who were initially vaccinated with either Moderna or Johnson & Johnson vaccines are excluded from booster recommendations, something many on the committee were uncomfortable with.
The FDA is still considering Moderna’s application to market booster doses. Johnson & Johnson hasn’t yet applied to the FDA for permission to offer second doses in the United States.
While the ACIP’s recommendations are important, in this case, they may not have a huge practical effect, said Schaffner. The CDC has already approved third shots for people who are immunocompromised, and no proof of a medical condition is required to get one.
More than 2 million people have already gotten a third dose, he noted, and not all of them are immunocompromised.
“They have heard the president say that, you know, everybody should get a booster, and they’ve taken that at face value,” he said.
A version of this article first appeared on WebMD.com.
The CDC’s Advisory Committee on Immunization Practices earlier Thursday voted to allow several groups of Americans to get a booster shot, but voted not to recommend it for adults age 18 to 64 who live or work in a place where the risk of COVID-19 is high. That would have included health care workers and other frontline employees.
But CDC Director Rochelle Walensky, MD, decided to reverse that recommendation and include the 18-to-64-year-olds in her final decision.
“As CDC Director, it is my job to recognize where our actions can have the greatest impact,” Dr. Walensky said in a statement late Thursday night, according to published reports. “At CDC, we are tasked with analyzing complex, often imperfect data to make concrete recommendations that optimize health. In a pandemic, even with uncertainty, we must take actions that we anticipate will do the greatest good.”
Dr. Walensky agreed with the rest of the advisory committee's decisions, which included recommendations that the following groups also be eligible for a booster shot:
- Adults ages 65 and up and residents of long-term care facilities
- Adults ages 50 to 64 who have an underlying medical condition that may increase their risk from a COVID infection
- Adults ages 18 to 49 who may be at increased risk from a COVID-19 infection because of an underlying medical condition, if a person feels like they need one based on a consideration of their individual benefit and risks.
About 26 million Americans are at least 6 months past the last dose of the Pfizer vaccines, making them eligible to receive a third dose. About 13.6 million of them are over the age of 65. Another 5.3 million are ages 50 to 64.
In making the recommendations, the committee left out healthcare workers. This was a departure from the Food and Drug Administration’s authorization which included boosters for those 65 and over, and for people 18 through 64 years of age who are at high risk for severe illness from the coronavirus, including essential workers – such as those in healthcare -- whose jobs increase their risk for infection.
This is the group Dr. Walensky added to the eligible list on her own.
Committee members “did not buy the need in occupational or institutional settings,” said William Schaffner, MD, an infectious disease specialist at Vanderbilt University in Nashville. Dr. Schaffner sits on the ACIP workgroup that considered the evidence behind boosters. He said that he would have voted yes to offer boosters to healthcare and other essential workers.
“There was a real split in the committee,” he said.
The vote on boosters for healthcare and other high-risk workers was rejected 9 to 6.
“I think that there is ample evidence that people such as healthcare workers do not have repeated exposure in the workplace,” said Beth Bell, MD, a clinical professor at the University of Washington. “They’re using PPE as they should and they’re following the other policies within the healthcare setting. There’s lots of evidence that suggest that health care workers who become infected become infected because of exposures in the community.”
She was not alone in feeling cautious.
“I think this is an extremely slippery slope,” said Sarah Long, MD, a pediatric infectious disease specialist at Drexel University in Philadelphia, before her vote to reject boosters for healthcare and other high-risk workers.
“We might as well just say, ‘Give it to everybody 18 and over.’ We have an extremely effective vaccine. It’s like saying it’s not working, and it is working.”
The committee saw data showing that all of the vaccines remain highly protective against hospitalization and death for all age groups, though protection against getting sick with COVID has waned slightly over time and with the dominance of the more contagious Delta variant. Those at highest risk for a severe breakthrough infection — those that cause hospitalization or death — are older adults.
How much will the U.S. benefit from boosters?
Some felt squeamish about broadly recommending boosters at all.
“We have too much hope on the line with these boosters,” said James Loehr, MD, who is a family physician in Ithaca, N.Y. Dr. Loehr said he felt the goal of giving boosters in the United States should be to decrease hospitalizations, and he felt they would, but that the impact would likely be smaller than appreciated.
Based on his calculations of the benefits of boosters for each age group, Dr. Loehr said if boosters were given to all 13 million seniors previously vaccinated with the Pfizer vaccine, we might prevent 200 hospitalizations a day, “which would be a lot,” he noted. But, he said, “considering that we have 10,000 hospitalizations a day now, it’s probably not that much.”
Others agreed.
“I really think this is a solution looking for a problem,” said Jason Goldman, MD, an associate professor at Florida Atlantic University who was representing the American College of Physicians. “You know, I don’t think it’s going to address the issue of the pandemic. I really think it’s just going to create more confusion on the provider from the position of implementation, and I really think it’s going really far afield of the data.”
ACIP Chair Grace Lee, MD, a pediatric infectious disease specialist at Stanford, said she had cared for children who had died of COVID.
“I can tell you that their family members really wished they had extra protection for their kids, because they weren’t symptomatic. Nobody else was sick at home,” she said.
Dr. Lee said for her, access was paramount, and she was in favor of expanding access to boosters for as many people as possible.
Next steps
People who were initially vaccinated with either Moderna or Johnson & Johnson vaccines are excluded from booster recommendations, something many on the committee were uncomfortable with.
The FDA is still considering Moderna’s application to market booster doses. Johnson & Johnson hasn’t yet applied to the FDA for permission to offer second doses in the United States.
While the ACIP’s recommendations are important, in this case, they may not have a huge practical effect, said Schaffner. The CDC has already approved third shots for people who are immunocompromised, and no proof of a medical condition is required to get one.
More than 2 million people have already gotten a third dose, he noted, and not all of them are immunocompromised.
“They have heard the president say that, you know, everybody should get a booster, and they’ve taken that at face value,” he said.
A version of this article first appeared on WebMD.com.
The CDC’s Advisory Committee on Immunization Practices earlier Thursday voted to allow several groups of Americans to get a booster shot, but voted not to recommend it for adults age 18 to 64 who live or work in a place where the risk of COVID-19 is high. That would have included health care workers and other frontline employees.
But CDC Director Rochelle Walensky, MD, decided to reverse that recommendation and include the 18-to-64-year-olds in her final decision.
“As CDC Director, it is my job to recognize where our actions can have the greatest impact,” Dr. Walensky said in a statement late Thursday night, according to published reports. “At CDC, we are tasked with analyzing complex, often imperfect data to make concrete recommendations that optimize health. In a pandemic, even with uncertainty, we must take actions that we anticipate will do the greatest good.”
Dr. Walensky agreed with the rest of the advisory committee's decisions, which included recommendations that the following groups also be eligible for a booster shot:
- Adults ages 65 and up and residents of long-term care facilities
- Adults ages 50 to 64 who have an underlying medical condition that may increase their risk from a COVID infection
- Adults ages 18 to 49 who may be at increased risk from a COVID-19 infection because of an underlying medical condition, if a person feels like they need one based on a consideration of their individual benefit and risks.
About 26 million Americans are at least 6 months past the last dose of the Pfizer vaccines, making them eligible to receive a third dose. About 13.6 million of them are over the age of 65. Another 5.3 million are ages 50 to 64.
In making the recommendations, the committee left out healthcare workers. This was a departure from the Food and Drug Administration’s authorization which included boosters for those 65 and over, and for people 18 through 64 years of age who are at high risk for severe illness from the coronavirus, including essential workers – such as those in healthcare -- whose jobs increase their risk for infection.
This is the group Dr. Walensky added to the eligible list on her own.
Committee members “did not buy the need in occupational or institutional settings,” said William Schaffner, MD, an infectious disease specialist at Vanderbilt University in Nashville. Dr. Schaffner sits on the ACIP workgroup that considered the evidence behind boosters. He said that he would have voted yes to offer boosters to healthcare and other essential workers.
“There was a real split in the committee,” he said.
The vote on boosters for healthcare and other high-risk workers was rejected 9 to 6.
“I think that there is ample evidence that people such as healthcare workers do not have repeated exposure in the workplace,” said Beth Bell, MD, a clinical professor at the University of Washington. “They’re using PPE as they should and they’re following the other policies within the healthcare setting. There’s lots of evidence that suggest that health care workers who become infected become infected because of exposures in the community.”
She was not alone in feeling cautious.
“I think this is an extremely slippery slope,” said Sarah Long, MD, a pediatric infectious disease specialist at Drexel University in Philadelphia, before her vote to reject boosters for healthcare and other high-risk workers.
“We might as well just say, ‘Give it to everybody 18 and over.’ We have an extremely effective vaccine. It’s like saying it’s not working, and it is working.”
The committee saw data showing that all of the vaccines remain highly protective against hospitalization and death for all age groups, though protection against getting sick with COVID has waned slightly over time and with the dominance of the more contagious Delta variant. Those at highest risk for a severe breakthrough infection — those that cause hospitalization or death — are older adults.
How much will the U.S. benefit from boosters?
Some felt squeamish about broadly recommending boosters at all.
“We have too much hope on the line with these boosters,” said James Loehr, MD, who is a family physician in Ithaca, N.Y. Dr. Loehr said he felt the goal of giving boosters in the United States should be to decrease hospitalizations, and he felt they would, but that the impact would likely be smaller than appreciated.
Based on his calculations of the benefits of boosters for each age group, Dr. Loehr said if boosters were given to all 13 million seniors previously vaccinated with the Pfizer vaccine, we might prevent 200 hospitalizations a day, “which would be a lot,” he noted. But, he said, “considering that we have 10,000 hospitalizations a day now, it’s probably not that much.”
Others agreed.
“I really think this is a solution looking for a problem,” said Jason Goldman, MD, an associate professor at Florida Atlantic University who was representing the American College of Physicians. “You know, I don’t think it’s going to address the issue of the pandemic. I really think it’s just going to create more confusion on the provider from the position of implementation, and I really think it’s going really far afield of the data.”
ACIP Chair Grace Lee, MD, a pediatric infectious disease specialist at Stanford, said she had cared for children who had died of COVID.
“I can tell you that their family members really wished they had extra protection for their kids, because they weren’t symptomatic. Nobody else was sick at home,” she said.
Dr. Lee said for her, access was paramount, and she was in favor of expanding access to boosters for as many people as possible.
Next steps
People who were initially vaccinated with either Moderna or Johnson & Johnson vaccines are excluded from booster recommendations, something many on the committee were uncomfortable with.
The FDA is still considering Moderna’s application to market booster doses. Johnson & Johnson hasn’t yet applied to the FDA for permission to offer second doses in the United States.
While the ACIP’s recommendations are important, in this case, they may not have a huge practical effect, said Schaffner. The CDC has already approved third shots for people who are immunocompromised, and no proof of a medical condition is required to get one.
More than 2 million people have already gotten a third dose, he noted, and not all of them are immunocompromised.
“They have heard the president say that, you know, everybody should get a booster, and they’ve taken that at face value,” he said.
A version of this article first appeared on WebMD.com.
COVID-19 vaccines in pregnancy may protect baby, too
Women who receive COVID-19 vaccines during pregnancy pass antibodies to their babies, which could protect newborns from the disease, research has shown.
.
Researchers with New York University Langone Health conducted a study that included pregnant women who had received at least one dose of an mRNA COVID-19 vaccine (Pfizer/BioNTech or Moderna) by June 4.
All neonates had antibodies to the spike protein at high titers, the researchers found.
Unlike similar prior studies, the researchers also looked for antibodies to the nucleocapsid protein, which would have indicated the presence of antibodies from natural COVID-19 infection. They did not detect antibodies to the nucleocapsid protein, and the lack of these antibodies suggests that the antibodies to the spike protein resulted from vaccination and not from prior infection, the researchers said.
The participants had a median time from completion of the vaccine series to delivery of 13 weeks. The study was published online in the American Journal of Obstetrics & Gynecology MFM.
“The presence of these anti-spike antibodies in the cord blood should, at least in theory, offer these newborns some degree of protection,” said study investigator Ashley S. Roman, MD, director of the division of maternal-fetal medicine at NYU Langone Health. “While the primary rationale for vaccination during pregnancy is to keep moms healthy and keep moms out of the hospital, the outstanding question to us was whether there is any fetal or neonatal benefit conferred by receiving the vaccine during pregnancy.”
Questions remain about the degree and durability of protection for newborns from these antibodies. An ongoing study, MOMI-VAX, aims to systematically measure antibody levels in mothers who receive COVID-19 vaccines during pregnancy and in their babies over time.
The present study contributes welcome preliminary evidence suggesting a benefit to infants, said Emily Adhikari, MD, of the University of Texas Southwestern Medical Center in Dallas, who was not involved in the study.
Still, “the main concern and our priority as obstetricians is to vaccinate pregnant women to protect them from severe or critical illness,” she said.
Although most individuals infected with SARS-CoV-2 recover, a significant portion of pregnant women get seriously sick, Dr. Adhikari said. “With this recent Delta surge, we are seeing more pregnant patients who are sicker,” said Dr. Adhikari, who has published research from one hospital describing this trend.
When weighing whether patients should receive COVID-19 vaccines in pregnancy, the risks from infection have outweighed any risk from vaccination to such an extent that there is “not a comparison to make,” Dr. Adhikari said. “The risks of the infection are so much higher.
“For me, it is a matter of making sure that my patient understands that we have really good safety data on these vaccines and there is no reason to think that a pregnant person would be harmed by them. On the contrary, the benefit is to protect and maybe even save your life,” Dr. Adhikari said. “And now we have more evidence that the fetus may also benefit.”
The rationale for vaccinations during pregnancy can vary, Dr. Roman said. Flu shots in pregnancy mainly are intended to protect the mother, though they confer protection for newborns as well. With the whooping cough vaccine given in the third trimester, however, the primary aim is to protect the baby from whooping cough in the first months of life, Dr. Roman said.
“I think it is really important for pregnant women to understand that antibodies crossing the placenta is a good thing,” she added.
As patients who already have received COVID-19 vaccines become pregnant and may become eligible for a booster dose, Dr. Adhikari will offer it, she said, though she has confidence in the protection provided by the initial immune response.
Dr. Roman and Dr. Adhikari had no disclosures.
Women who receive COVID-19 vaccines during pregnancy pass antibodies to their babies, which could protect newborns from the disease, research has shown.
.
Researchers with New York University Langone Health conducted a study that included pregnant women who had received at least one dose of an mRNA COVID-19 vaccine (Pfizer/BioNTech or Moderna) by June 4.
All neonates had antibodies to the spike protein at high titers, the researchers found.
Unlike similar prior studies, the researchers also looked for antibodies to the nucleocapsid protein, which would have indicated the presence of antibodies from natural COVID-19 infection. They did not detect antibodies to the nucleocapsid protein, and the lack of these antibodies suggests that the antibodies to the spike protein resulted from vaccination and not from prior infection, the researchers said.
The participants had a median time from completion of the vaccine series to delivery of 13 weeks. The study was published online in the American Journal of Obstetrics & Gynecology MFM.
“The presence of these anti-spike antibodies in the cord blood should, at least in theory, offer these newborns some degree of protection,” said study investigator Ashley S. Roman, MD, director of the division of maternal-fetal medicine at NYU Langone Health. “While the primary rationale for vaccination during pregnancy is to keep moms healthy and keep moms out of the hospital, the outstanding question to us was whether there is any fetal or neonatal benefit conferred by receiving the vaccine during pregnancy.”
Questions remain about the degree and durability of protection for newborns from these antibodies. An ongoing study, MOMI-VAX, aims to systematically measure antibody levels in mothers who receive COVID-19 vaccines during pregnancy and in their babies over time.
The present study contributes welcome preliminary evidence suggesting a benefit to infants, said Emily Adhikari, MD, of the University of Texas Southwestern Medical Center in Dallas, who was not involved in the study.
Still, “the main concern and our priority as obstetricians is to vaccinate pregnant women to protect them from severe or critical illness,” she said.
Although most individuals infected with SARS-CoV-2 recover, a significant portion of pregnant women get seriously sick, Dr. Adhikari said. “With this recent Delta surge, we are seeing more pregnant patients who are sicker,” said Dr. Adhikari, who has published research from one hospital describing this trend.
When weighing whether patients should receive COVID-19 vaccines in pregnancy, the risks from infection have outweighed any risk from vaccination to such an extent that there is “not a comparison to make,” Dr. Adhikari said. “The risks of the infection are so much higher.
“For me, it is a matter of making sure that my patient understands that we have really good safety data on these vaccines and there is no reason to think that a pregnant person would be harmed by them. On the contrary, the benefit is to protect and maybe even save your life,” Dr. Adhikari said. “And now we have more evidence that the fetus may also benefit.”
The rationale for vaccinations during pregnancy can vary, Dr. Roman said. Flu shots in pregnancy mainly are intended to protect the mother, though they confer protection for newborns as well. With the whooping cough vaccine given in the third trimester, however, the primary aim is to protect the baby from whooping cough in the first months of life, Dr. Roman said.
“I think it is really important for pregnant women to understand that antibodies crossing the placenta is a good thing,” she added.
As patients who already have received COVID-19 vaccines become pregnant and may become eligible for a booster dose, Dr. Adhikari will offer it, she said, though she has confidence in the protection provided by the initial immune response.
Dr. Roman and Dr. Adhikari had no disclosures.
Women who receive COVID-19 vaccines during pregnancy pass antibodies to their babies, which could protect newborns from the disease, research has shown.
.
Researchers with New York University Langone Health conducted a study that included pregnant women who had received at least one dose of an mRNA COVID-19 vaccine (Pfizer/BioNTech or Moderna) by June 4.
All neonates had antibodies to the spike protein at high titers, the researchers found.
Unlike similar prior studies, the researchers also looked for antibodies to the nucleocapsid protein, which would have indicated the presence of antibodies from natural COVID-19 infection. They did not detect antibodies to the nucleocapsid protein, and the lack of these antibodies suggests that the antibodies to the spike protein resulted from vaccination and not from prior infection, the researchers said.
The participants had a median time from completion of the vaccine series to delivery of 13 weeks. The study was published online in the American Journal of Obstetrics & Gynecology MFM.
“The presence of these anti-spike antibodies in the cord blood should, at least in theory, offer these newborns some degree of protection,” said study investigator Ashley S. Roman, MD, director of the division of maternal-fetal medicine at NYU Langone Health. “While the primary rationale for vaccination during pregnancy is to keep moms healthy and keep moms out of the hospital, the outstanding question to us was whether there is any fetal or neonatal benefit conferred by receiving the vaccine during pregnancy.”
Questions remain about the degree and durability of protection for newborns from these antibodies. An ongoing study, MOMI-VAX, aims to systematically measure antibody levels in mothers who receive COVID-19 vaccines during pregnancy and in their babies over time.
The present study contributes welcome preliminary evidence suggesting a benefit to infants, said Emily Adhikari, MD, of the University of Texas Southwestern Medical Center in Dallas, who was not involved in the study.
Still, “the main concern and our priority as obstetricians is to vaccinate pregnant women to protect them from severe or critical illness,” she said.
Although most individuals infected with SARS-CoV-2 recover, a significant portion of pregnant women get seriously sick, Dr. Adhikari said. “With this recent Delta surge, we are seeing more pregnant patients who are sicker,” said Dr. Adhikari, who has published research from one hospital describing this trend.
When weighing whether patients should receive COVID-19 vaccines in pregnancy, the risks from infection have outweighed any risk from vaccination to such an extent that there is “not a comparison to make,” Dr. Adhikari said. “The risks of the infection are so much higher.
“For me, it is a matter of making sure that my patient understands that we have really good safety data on these vaccines and there is no reason to think that a pregnant person would be harmed by them. On the contrary, the benefit is to protect and maybe even save your life,” Dr. Adhikari said. “And now we have more evidence that the fetus may also benefit.”
The rationale for vaccinations during pregnancy can vary, Dr. Roman said. Flu shots in pregnancy mainly are intended to protect the mother, though they confer protection for newborns as well. With the whooping cough vaccine given in the third trimester, however, the primary aim is to protect the baby from whooping cough in the first months of life, Dr. Roman said.
“I think it is really important for pregnant women to understand that antibodies crossing the placenta is a good thing,” she added.
As patients who already have received COVID-19 vaccines become pregnant and may become eligible for a booster dose, Dr. Adhikari will offer it, she said, though she has confidence in the protection provided by the initial immune response.
Dr. Roman and Dr. Adhikari had no disclosures.
FROM AMERICAN JOURNAL OF OBSTETRICS & GYNECOLOGY MFM
FDA OKs Pfizer COVID booster for 65 and over, those at high risk
The agency’s move comes as a Centers for Disease Control and Prevention (CDC) panel ended the first day of a 2-day meeting. That panel, the Advisory Committee on Immunization Practices (ACIP), is expected to vote Sept. 23 to instruct doctors on how to administer the boosters.
The FDA officially authorized the vaccine not only for individuals 65 and older, but also for people 18 through 64 years of age who are at high risk for severe illness from the coronavirus, including essential workers whose jobs increase their risk for infection.
“After considering the totality of the available scientific evidence and the deliberations of our advisory committee of independent, external experts, the FDA amended the EUA for the Pfizer-BioNTech COVID-19 vaccine to allow for a booster dose in certain populations such as health care workers, teachers and daycare staff, grocery workers and those in homeless shelters or prisons, among others,” Acting FDA Commissioner Janet Woodcock, MD, said in a news release.
The recommendations align with those from an FDA advisory panel Sept. 17.
The agency determined that the benefits of a booster dose outweigh the risks for people now authorized to receive it, according to the news release.
Other questions remain
So, how will this work? That was the main question weighing on the minds of the CDC’s ACIP during their first day of a 2-day meeting where they are expected to make recommendations on booster doses for Americans.
The panel discussed situations the FDA will still need to consider, such as what should be done for Americans who were originally vaccinated with a Moderna or Johnson and Johnson vaccine, but are not covered under the revised EUA, which is only for those people who received Pfizer’s two-dose vaccine regimen.
“That’s going to leave half of the people immunized in this age group having received the vaccine and being told that they’re at risk now for waning immunity and hospitalization unable to get a booster dose,” said committee member Sarah S. Long, MD, a professor of pediatrics at Drexel University College of Medicine in Philadelphia. “So that’s a big public health panic that we would like to avoid.”
Johnson and Johnson recently reported that second doses of its vaccine boosted its efficacy to almost 94% against COVID-19. A new study, published ahead of peer review, suggests that the efficacy of the single-dose Johnson and Johnson shot has fallen to about 78% against symptomatic infection during the Delta surge.
Moderna has applied for permission to market third doses of its vaccine in the United States, but the FDA has given no timeline on when it might make a decision.
Doran Fink, MD, PhD, deputy director of the FDA’s Division of Vaccines and Related Products Applications, a representative advising the committee Sept. 22, said the agency was working as rapidly as possible on Moderna’s submission.
Regarding the question of whether it was OK to mix vaccines, rather than match them, Dr. Fink said there are currently not enough data available to inform that decision.
Those answers are coming, though. John Beigel, MD, associate director of clinical research at the National Institute of Allergy and Infectious Diseases, revealed that the federal government has a study underway to see what happens when the vaccines are mixed with each other.
He said that data from the study would be available later this fall, and would certainly help physicians and other healthcare providers know whether it’s effective or safe to use them interchangeably.
Correlates of immunity
The ACIP left much of its schedule open Sept. 23 to discuss extra Pfizer doses and vote on how they should be used.
Pfizer had originally applied to the FDA for an amendment to its FDA approval, which would have given doctors a freer hand to prescribe third doses as they saw fit, in patients as young as 16.
But the FDA’s Vaccines and Related Biological Products Advisory Committee voted Sept. 17 against granting the amendment. The committee was particularly concerned about the lack of data in teens ages 16 and 17, who have the highest risk for a rare side effect that causes heart inflammation that requires hospital care.
Instead, they recommended — and the FDA agreed per their decision Sept. 22 — that third doses should be given to people at higher risk for severe breakthrough infections because of advanced age or because they work in an occupation that puts them at high risk for exposure.
The CDC panel heard important presentations on new science that is helping to identify the correlates of immunity.
The correlates of immunity are biomarkers that can be measured in blood that help doctors understand how protected a person may be against COVID-19. These markers of immunity are not yet known for the COVID-19 vaccines.
Emerging evidence shows that booster doses of the Pfizer vaccine cause front-line immune defenders — called binding antibodies — to roughly triple soon after a person gets the third shot.
Neutralizing antibodies also jump soon after two vaccine doses, but they fall over time, which is natural. The body doesn’t need these foot soldiers to be on guard all the time, so they go away.
The body retains its memory of how to make them, however, so they can quickly be marshaled again, if needed.
Early studies suggest that antibodies account for about two thirds of a person’s protection against COVID, while the longer-lasting T-cells and B-cells account for about one third.
After the antibody levels fall, it may take a few days to recreate this army. In the meantime, the virus can try to break in. This can cause symptoms, which can make a person feel terrible, but for the most part, vaccinated individuals don’t need hospital care and are nearly always protected from dying — even against the Delta variant.
Those most likely to be at risk for a breakthrough infection are older, because immune function wanes with age.
Essential workers
Essential workers, such as those who work in healthcare, may also benefit from high antibody levels, which can minimize symptoms and help them get back to work more quickly.
Helen Talbot, MD, MPH, an associate professor of medicine at Vanderbilt University Medical Center in Nashville, said that in her area staffing levels are critical right now.
“I’m actually sitting in one of the deepest red [states] with high rates of COVID. We don’t have enough health care workers currently to take care of the unvaccinated,” she said.
“When we have beds, we are often missing staff, and so the idea of vaccinating health care workers is to be a little bit different than our idea of using vaccines in the general population,” Dr. Talbot said.
Oliver Brooks, MD, chief medical officer of the Watts Healthcare Corporation in Los Angeles, said he was in favor of making a public statement about the temporary nature of the potential recommendations Sept. 23, because they probably won’t cover all who might need a third shot.
“We may want to go on record stating what it is that would allow us to broaden our recommendation or restrict our recommendation,” Dr. Brooks said.
The considerations of who should get an extra dose are not always straightforward.
New modeling by the Harvard TH Chan School of Public Health and the CDC to assist the government’s decisions on boosters had a surprise finding: in nursing homes, it’s more effective to vaccinate healthcare workers than it is to give booster doses to these residents. Nursing homes are at the mercy of community transmission.
In regions with high transmission, it’s easy for a caregiver to bring the virus into a facility — so the models found that the transmission from these workers is a more effective strategy than giving third doses to the already highly vaccinated group of seniors who live in them.
A version of this article first appeared on Medscape.com.
The agency’s move comes as a Centers for Disease Control and Prevention (CDC) panel ended the first day of a 2-day meeting. That panel, the Advisory Committee on Immunization Practices (ACIP), is expected to vote Sept. 23 to instruct doctors on how to administer the boosters.
The FDA officially authorized the vaccine not only for individuals 65 and older, but also for people 18 through 64 years of age who are at high risk for severe illness from the coronavirus, including essential workers whose jobs increase their risk for infection.
“After considering the totality of the available scientific evidence and the deliberations of our advisory committee of independent, external experts, the FDA amended the EUA for the Pfizer-BioNTech COVID-19 vaccine to allow for a booster dose in certain populations such as health care workers, teachers and daycare staff, grocery workers and those in homeless shelters or prisons, among others,” Acting FDA Commissioner Janet Woodcock, MD, said in a news release.
The recommendations align with those from an FDA advisory panel Sept. 17.
The agency determined that the benefits of a booster dose outweigh the risks for people now authorized to receive it, according to the news release.
Other questions remain
So, how will this work? That was the main question weighing on the minds of the CDC’s ACIP during their first day of a 2-day meeting where they are expected to make recommendations on booster doses for Americans.
The panel discussed situations the FDA will still need to consider, such as what should be done for Americans who were originally vaccinated with a Moderna or Johnson and Johnson vaccine, but are not covered under the revised EUA, which is only for those people who received Pfizer’s two-dose vaccine regimen.
“That’s going to leave half of the people immunized in this age group having received the vaccine and being told that they’re at risk now for waning immunity and hospitalization unable to get a booster dose,” said committee member Sarah S. Long, MD, a professor of pediatrics at Drexel University College of Medicine in Philadelphia. “So that’s a big public health panic that we would like to avoid.”
Johnson and Johnson recently reported that second doses of its vaccine boosted its efficacy to almost 94% against COVID-19. A new study, published ahead of peer review, suggests that the efficacy of the single-dose Johnson and Johnson shot has fallen to about 78% against symptomatic infection during the Delta surge.
Moderna has applied for permission to market third doses of its vaccine in the United States, but the FDA has given no timeline on when it might make a decision.
Doran Fink, MD, PhD, deputy director of the FDA’s Division of Vaccines and Related Products Applications, a representative advising the committee Sept. 22, said the agency was working as rapidly as possible on Moderna’s submission.
Regarding the question of whether it was OK to mix vaccines, rather than match them, Dr. Fink said there are currently not enough data available to inform that decision.
Those answers are coming, though. John Beigel, MD, associate director of clinical research at the National Institute of Allergy and Infectious Diseases, revealed that the federal government has a study underway to see what happens when the vaccines are mixed with each other.
He said that data from the study would be available later this fall, and would certainly help physicians and other healthcare providers know whether it’s effective or safe to use them interchangeably.
Correlates of immunity
The ACIP left much of its schedule open Sept. 23 to discuss extra Pfizer doses and vote on how they should be used.
Pfizer had originally applied to the FDA for an amendment to its FDA approval, which would have given doctors a freer hand to prescribe third doses as they saw fit, in patients as young as 16.
But the FDA’s Vaccines and Related Biological Products Advisory Committee voted Sept. 17 against granting the amendment. The committee was particularly concerned about the lack of data in teens ages 16 and 17, who have the highest risk for a rare side effect that causes heart inflammation that requires hospital care.
Instead, they recommended — and the FDA agreed per their decision Sept. 22 — that third doses should be given to people at higher risk for severe breakthrough infections because of advanced age or because they work in an occupation that puts them at high risk for exposure.
The CDC panel heard important presentations on new science that is helping to identify the correlates of immunity.
The correlates of immunity are biomarkers that can be measured in blood that help doctors understand how protected a person may be against COVID-19. These markers of immunity are not yet known for the COVID-19 vaccines.
Emerging evidence shows that booster doses of the Pfizer vaccine cause front-line immune defenders — called binding antibodies — to roughly triple soon after a person gets the third shot.
Neutralizing antibodies also jump soon after two vaccine doses, but they fall over time, which is natural. The body doesn’t need these foot soldiers to be on guard all the time, so they go away.
The body retains its memory of how to make them, however, so they can quickly be marshaled again, if needed.
Early studies suggest that antibodies account for about two thirds of a person’s protection against COVID, while the longer-lasting T-cells and B-cells account for about one third.
After the antibody levels fall, it may take a few days to recreate this army. In the meantime, the virus can try to break in. This can cause symptoms, which can make a person feel terrible, but for the most part, vaccinated individuals don’t need hospital care and are nearly always protected from dying — even against the Delta variant.
Those most likely to be at risk for a breakthrough infection are older, because immune function wanes with age.
Essential workers
Essential workers, such as those who work in healthcare, may also benefit from high antibody levels, which can minimize symptoms and help them get back to work more quickly.
Helen Talbot, MD, MPH, an associate professor of medicine at Vanderbilt University Medical Center in Nashville, said that in her area staffing levels are critical right now.
“I’m actually sitting in one of the deepest red [states] with high rates of COVID. We don’t have enough health care workers currently to take care of the unvaccinated,” she said.
“When we have beds, we are often missing staff, and so the idea of vaccinating health care workers is to be a little bit different than our idea of using vaccines in the general population,” Dr. Talbot said.
Oliver Brooks, MD, chief medical officer of the Watts Healthcare Corporation in Los Angeles, said he was in favor of making a public statement about the temporary nature of the potential recommendations Sept. 23, because they probably won’t cover all who might need a third shot.
“We may want to go on record stating what it is that would allow us to broaden our recommendation or restrict our recommendation,” Dr. Brooks said.
The considerations of who should get an extra dose are not always straightforward.
New modeling by the Harvard TH Chan School of Public Health and the CDC to assist the government’s decisions on boosters had a surprise finding: in nursing homes, it’s more effective to vaccinate healthcare workers than it is to give booster doses to these residents. Nursing homes are at the mercy of community transmission.
In regions with high transmission, it’s easy for a caregiver to bring the virus into a facility — so the models found that the transmission from these workers is a more effective strategy than giving third doses to the already highly vaccinated group of seniors who live in them.
A version of this article first appeared on Medscape.com.
The agency’s move comes as a Centers for Disease Control and Prevention (CDC) panel ended the first day of a 2-day meeting. That panel, the Advisory Committee on Immunization Practices (ACIP), is expected to vote Sept. 23 to instruct doctors on how to administer the boosters.
The FDA officially authorized the vaccine not only for individuals 65 and older, but also for people 18 through 64 years of age who are at high risk for severe illness from the coronavirus, including essential workers whose jobs increase their risk for infection.
“After considering the totality of the available scientific evidence and the deliberations of our advisory committee of independent, external experts, the FDA amended the EUA for the Pfizer-BioNTech COVID-19 vaccine to allow for a booster dose in certain populations such as health care workers, teachers and daycare staff, grocery workers and those in homeless shelters or prisons, among others,” Acting FDA Commissioner Janet Woodcock, MD, said in a news release.
The recommendations align with those from an FDA advisory panel Sept. 17.
The agency determined that the benefits of a booster dose outweigh the risks for people now authorized to receive it, according to the news release.
Other questions remain
So, how will this work? That was the main question weighing on the minds of the CDC’s ACIP during their first day of a 2-day meeting where they are expected to make recommendations on booster doses for Americans.
The panel discussed situations the FDA will still need to consider, such as what should be done for Americans who were originally vaccinated with a Moderna or Johnson and Johnson vaccine, but are not covered under the revised EUA, which is only for those people who received Pfizer’s two-dose vaccine regimen.
“That’s going to leave half of the people immunized in this age group having received the vaccine and being told that they’re at risk now for waning immunity and hospitalization unable to get a booster dose,” said committee member Sarah S. Long, MD, a professor of pediatrics at Drexel University College of Medicine in Philadelphia. “So that’s a big public health panic that we would like to avoid.”
Johnson and Johnson recently reported that second doses of its vaccine boosted its efficacy to almost 94% against COVID-19. A new study, published ahead of peer review, suggests that the efficacy of the single-dose Johnson and Johnson shot has fallen to about 78% against symptomatic infection during the Delta surge.
Moderna has applied for permission to market third doses of its vaccine in the United States, but the FDA has given no timeline on when it might make a decision.
Doran Fink, MD, PhD, deputy director of the FDA’s Division of Vaccines and Related Products Applications, a representative advising the committee Sept. 22, said the agency was working as rapidly as possible on Moderna’s submission.
Regarding the question of whether it was OK to mix vaccines, rather than match them, Dr. Fink said there are currently not enough data available to inform that decision.
Those answers are coming, though. John Beigel, MD, associate director of clinical research at the National Institute of Allergy and Infectious Diseases, revealed that the federal government has a study underway to see what happens when the vaccines are mixed with each other.
He said that data from the study would be available later this fall, and would certainly help physicians and other healthcare providers know whether it’s effective or safe to use them interchangeably.
Correlates of immunity
The ACIP left much of its schedule open Sept. 23 to discuss extra Pfizer doses and vote on how they should be used.
Pfizer had originally applied to the FDA for an amendment to its FDA approval, which would have given doctors a freer hand to prescribe third doses as they saw fit, in patients as young as 16.
But the FDA’s Vaccines and Related Biological Products Advisory Committee voted Sept. 17 against granting the amendment. The committee was particularly concerned about the lack of data in teens ages 16 and 17, who have the highest risk for a rare side effect that causes heart inflammation that requires hospital care.
Instead, they recommended — and the FDA agreed per their decision Sept. 22 — that third doses should be given to people at higher risk for severe breakthrough infections because of advanced age or because they work in an occupation that puts them at high risk for exposure.
The CDC panel heard important presentations on new science that is helping to identify the correlates of immunity.
The correlates of immunity are biomarkers that can be measured in blood that help doctors understand how protected a person may be against COVID-19. These markers of immunity are not yet known for the COVID-19 vaccines.
Emerging evidence shows that booster doses of the Pfizer vaccine cause front-line immune defenders — called binding antibodies — to roughly triple soon after a person gets the third shot.
Neutralizing antibodies also jump soon after two vaccine doses, but they fall over time, which is natural. The body doesn’t need these foot soldiers to be on guard all the time, so they go away.
The body retains its memory of how to make them, however, so they can quickly be marshaled again, if needed.
Early studies suggest that antibodies account for about two thirds of a person’s protection against COVID, while the longer-lasting T-cells and B-cells account for about one third.
After the antibody levels fall, it may take a few days to recreate this army. In the meantime, the virus can try to break in. This can cause symptoms, which can make a person feel terrible, but for the most part, vaccinated individuals don’t need hospital care and are nearly always protected from dying — even against the Delta variant.
Those most likely to be at risk for a breakthrough infection are older, because immune function wanes with age.
Essential workers
Essential workers, such as those who work in healthcare, may also benefit from high antibody levels, which can minimize symptoms and help them get back to work more quickly.
Helen Talbot, MD, MPH, an associate professor of medicine at Vanderbilt University Medical Center in Nashville, said that in her area staffing levels are critical right now.
“I’m actually sitting in one of the deepest red [states] with high rates of COVID. We don’t have enough health care workers currently to take care of the unvaccinated,” she said.
“When we have beds, we are often missing staff, and so the idea of vaccinating health care workers is to be a little bit different than our idea of using vaccines in the general population,” Dr. Talbot said.
Oliver Brooks, MD, chief medical officer of the Watts Healthcare Corporation in Los Angeles, said he was in favor of making a public statement about the temporary nature of the potential recommendations Sept. 23, because they probably won’t cover all who might need a third shot.
“We may want to go on record stating what it is that would allow us to broaden our recommendation or restrict our recommendation,” Dr. Brooks said.
The considerations of who should get an extra dose are not always straightforward.
New modeling by the Harvard TH Chan School of Public Health and the CDC to assist the government’s decisions on boosters had a surprise finding: in nursing homes, it’s more effective to vaccinate healthcare workers than it is to give booster doses to these residents. Nursing homes are at the mercy of community transmission.
In regions with high transmission, it’s easy for a caregiver to bring the virus into a facility — so the models found that the transmission from these workers is a more effective strategy than giving third doses to the already highly vaccinated group of seniors who live in them.
A version of this article first appeared on Medscape.com.
HPV vaccine safety concerns up 80% from 2015 to 2018
Despite a decrease in reported adverse events after receiving the human papillomavirus (HPV) vaccine, among parents of unvaccinated adolescents, concerns about the vaccine’s safety rose 80% from 2015 to 2018, according to research published September 17 in JAMA Network Open.
Since its approval in 2006 by the U.S. Food and Drug Administration, uptake of the HPV vaccine has consistently lagged behind that of other routine vaccinations. According to the most recent data from the Centers for Disease Control and Prevention, released September 3, 58.6% of adolescents were considered up to date with their HPV vaccinations in 2020.
Trials prior to the vaccine’s FDA approval as well as an abundance of clinical and observational evidence after it hit the market demonstrate the vaccine’s efficacy and safety, said lead author Kalyani Sonawane, PhD, an assistant professor of management, policy, and community health at the UTHealth School of Public Health, in Houston, Texas, in an interview. Still, recent research suggests that safety concerns are a main reason why parents are hesitant to have their children vaccinated, she noted.
In the study, Dr. Sonawane and colleagues analyzed data from National Immunization Survey-Teen (NIS-Teen) from 2015 through 2018. NIS-Teen is a random-digit-dialed telephone survey conducted annually by the CDC to monitor routine vaccination coverage among adolescents aged 13 to 17. The researchers identified 39,364 adolescents who had not received any HPV shots and reviewed the caregivers’ reasons for vaccine hesitancy. The research team also reviewed the Vaccine Adverse Event Reporting System (VAERS). They identified 16,621 reports that listed the HPV vaccine from 2015 through 2018.
The top five reasons caregivers cited for avoiding the HPV vaccine were the following:
- not needed or necessary
- safety concerns
- not recommended
- lack of knowledge
- not sexually active
Of these, safety concerns were the only factor that increased during the study period. They increased from 13.0% in 2015 to 23.4% in 2018. Concerns over vaccine safety rose in 30 states, with increases of over 200% in California, Hawaii, South Dakota, and Mississippi.
The proportion of unvaccinated adolescents whose caregivers thought the HPV vaccine was not needed or necessary remained steady at around 25%. Those whose caregivers listed “not recommended,” “lack of knowledge,” and “not sexually active” as reasons for avoiding vaccination decreased over the study period.
The reporting rate for adverse events following HPV vaccination decreased from 44.7 per 100,000 doses in 2015 to 29.4 per 100,000 doses in 2018. Of the reported 16,621 adverse events following HPV vaccination that occurred over the study period, 4.6% were serious, resulting in hospitalizations, disability, life-threatening events, or death. From 2015 through 2018, reporting rates for serious adverse events remained level at around 0.3 events per 100,000 doses.
This mismatch between increasing vaccine safety concerns and decreasing adverse events suggests that disinformation may be driving these concerns more than scientific fact, Nosayaba Osazuwa-Peters, PhD, MPH, an assistant professor in head and neck surgery and communication sciences at the Duke University School of Medicine, in Durham, North Carolina, told this news organization. He co-wrote an invited commentary on the study and was not involved with the research. Although there have always been people who are hesitant to receive vaccinations, he said, social media and the internet have undoubtedly played a role in spreading concern.
Dr. Sonawane agreed. Online, “there are a lot of antivaccine groups that are making unwarranted claims about the vaccine’s safety,” such as that the HPV vaccine causes autism or fertility problems in women, she said. “We believe that this growing antivaccine movement in the U.S. and across the globe – which the World Health Organization has declared as one of the biggest threats right now – is also contributing to safety concerns among U.S. parents, particularly HPV vaccine safety.”
Although the study did not address strategies to combat this misinformation, Dr. Osazuwa-Peters said clinicians need to improve their communication with parents and patients. One way to do that, he said, is by bolstering an online presence and by countering vaccine disinformation with evidence-based responses on the internet. Most people get their medical information online. “Many people are just afraid because they don’t trust the messages coming from health care,” he said. “So, we need to a better job of not just providing the facts but providing the facts in a way that the end users can understand and appreciate.”
Dr. Sonawane and Dr. Osazuwa-Peters report no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Despite a decrease in reported adverse events after receiving the human papillomavirus (HPV) vaccine, among parents of unvaccinated adolescents, concerns about the vaccine’s safety rose 80% from 2015 to 2018, according to research published September 17 in JAMA Network Open.
Since its approval in 2006 by the U.S. Food and Drug Administration, uptake of the HPV vaccine has consistently lagged behind that of other routine vaccinations. According to the most recent data from the Centers for Disease Control and Prevention, released September 3, 58.6% of adolescents were considered up to date with their HPV vaccinations in 2020.
Trials prior to the vaccine’s FDA approval as well as an abundance of clinical and observational evidence after it hit the market demonstrate the vaccine’s efficacy and safety, said lead author Kalyani Sonawane, PhD, an assistant professor of management, policy, and community health at the UTHealth School of Public Health, in Houston, Texas, in an interview. Still, recent research suggests that safety concerns are a main reason why parents are hesitant to have their children vaccinated, she noted.
In the study, Dr. Sonawane and colleagues analyzed data from National Immunization Survey-Teen (NIS-Teen) from 2015 through 2018. NIS-Teen is a random-digit-dialed telephone survey conducted annually by the CDC to monitor routine vaccination coverage among adolescents aged 13 to 17. The researchers identified 39,364 adolescents who had not received any HPV shots and reviewed the caregivers’ reasons for vaccine hesitancy. The research team also reviewed the Vaccine Adverse Event Reporting System (VAERS). They identified 16,621 reports that listed the HPV vaccine from 2015 through 2018.
The top five reasons caregivers cited for avoiding the HPV vaccine were the following:
- not needed or necessary
- safety concerns
- not recommended
- lack of knowledge
- not sexually active
Of these, safety concerns were the only factor that increased during the study period. They increased from 13.0% in 2015 to 23.4% in 2018. Concerns over vaccine safety rose in 30 states, with increases of over 200% in California, Hawaii, South Dakota, and Mississippi.
The proportion of unvaccinated adolescents whose caregivers thought the HPV vaccine was not needed or necessary remained steady at around 25%. Those whose caregivers listed “not recommended,” “lack of knowledge,” and “not sexually active” as reasons for avoiding vaccination decreased over the study period.
The reporting rate for adverse events following HPV vaccination decreased from 44.7 per 100,000 doses in 2015 to 29.4 per 100,000 doses in 2018. Of the reported 16,621 adverse events following HPV vaccination that occurred over the study period, 4.6% were serious, resulting in hospitalizations, disability, life-threatening events, or death. From 2015 through 2018, reporting rates for serious adverse events remained level at around 0.3 events per 100,000 doses.
This mismatch between increasing vaccine safety concerns and decreasing adverse events suggests that disinformation may be driving these concerns more than scientific fact, Nosayaba Osazuwa-Peters, PhD, MPH, an assistant professor in head and neck surgery and communication sciences at the Duke University School of Medicine, in Durham, North Carolina, told this news organization. He co-wrote an invited commentary on the study and was not involved with the research. Although there have always been people who are hesitant to receive vaccinations, he said, social media and the internet have undoubtedly played a role in spreading concern.
Dr. Sonawane agreed. Online, “there are a lot of antivaccine groups that are making unwarranted claims about the vaccine’s safety,” such as that the HPV vaccine causes autism or fertility problems in women, she said. “We believe that this growing antivaccine movement in the U.S. and across the globe – which the World Health Organization has declared as one of the biggest threats right now – is also contributing to safety concerns among U.S. parents, particularly HPV vaccine safety.”
Although the study did not address strategies to combat this misinformation, Dr. Osazuwa-Peters said clinicians need to improve their communication with parents and patients. One way to do that, he said, is by bolstering an online presence and by countering vaccine disinformation with evidence-based responses on the internet. Most people get their medical information online. “Many people are just afraid because they don’t trust the messages coming from health care,” he said. “So, we need to a better job of not just providing the facts but providing the facts in a way that the end users can understand and appreciate.”
Dr. Sonawane and Dr. Osazuwa-Peters report no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Despite a decrease in reported adverse events after receiving the human papillomavirus (HPV) vaccine, among parents of unvaccinated adolescents, concerns about the vaccine’s safety rose 80% from 2015 to 2018, according to research published September 17 in JAMA Network Open.
Since its approval in 2006 by the U.S. Food and Drug Administration, uptake of the HPV vaccine has consistently lagged behind that of other routine vaccinations. According to the most recent data from the Centers for Disease Control and Prevention, released September 3, 58.6% of adolescents were considered up to date with their HPV vaccinations in 2020.
Trials prior to the vaccine’s FDA approval as well as an abundance of clinical and observational evidence after it hit the market demonstrate the vaccine’s efficacy and safety, said lead author Kalyani Sonawane, PhD, an assistant professor of management, policy, and community health at the UTHealth School of Public Health, in Houston, Texas, in an interview. Still, recent research suggests that safety concerns are a main reason why parents are hesitant to have their children vaccinated, she noted.
In the study, Dr. Sonawane and colleagues analyzed data from National Immunization Survey-Teen (NIS-Teen) from 2015 through 2018. NIS-Teen is a random-digit-dialed telephone survey conducted annually by the CDC to monitor routine vaccination coverage among adolescents aged 13 to 17. The researchers identified 39,364 adolescents who had not received any HPV shots and reviewed the caregivers’ reasons for vaccine hesitancy. The research team also reviewed the Vaccine Adverse Event Reporting System (VAERS). They identified 16,621 reports that listed the HPV vaccine from 2015 through 2018.
The top five reasons caregivers cited for avoiding the HPV vaccine were the following:
- not needed or necessary
- safety concerns
- not recommended
- lack of knowledge
- not sexually active
Of these, safety concerns were the only factor that increased during the study period. They increased from 13.0% in 2015 to 23.4% in 2018. Concerns over vaccine safety rose in 30 states, with increases of over 200% in California, Hawaii, South Dakota, and Mississippi.
The proportion of unvaccinated adolescents whose caregivers thought the HPV vaccine was not needed or necessary remained steady at around 25%. Those whose caregivers listed “not recommended,” “lack of knowledge,” and “not sexually active” as reasons for avoiding vaccination decreased over the study period.
The reporting rate for adverse events following HPV vaccination decreased from 44.7 per 100,000 doses in 2015 to 29.4 per 100,000 doses in 2018. Of the reported 16,621 adverse events following HPV vaccination that occurred over the study period, 4.6% were serious, resulting in hospitalizations, disability, life-threatening events, or death. From 2015 through 2018, reporting rates for serious adverse events remained level at around 0.3 events per 100,000 doses.
This mismatch between increasing vaccine safety concerns and decreasing adverse events suggests that disinformation may be driving these concerns more than scientific fact, Nosayaba Osazuwa-Peters, PhD, MPH, an assistant professor in head and neck surgery and communication sciences at the Duke University School of Medicine, in Durham, North Carolina, told this news organization. He co-wrote an invited commentary on the study and was not involved with the research. Although there have always been people who are hesitant to receive vaccinations, he said, social media and the internet have undoubtedly played a role in spreading concern.
Dr. Sonawane agreed. Online, “there are a lot of antivaccine groups that are making unwarranted claims about the vaccine’s safety,” such as that the HPV vaccine causes autism or fertility problems in women, she said. “We believe that this growing antivaccine movement in the U.S. and across the globe – which the World Health Organization has declared as one of the biggest threats right now – is also contributing to safety concerns among U.S. parents, particularly HPV vaccine safety.”
Although the study did not address strategies to combat this misinformation, Dr. Osazuwa-Peters said clinicians need to improve their communication with parents and patients. One way to do that, he said, is by bolstering an online presence and by countering vaccine disinformation with evidence-based responses on the internet. Most people get their medical information online. “Many people are just afraid because they don’t trust the messages coming from health care,” he said. “So, we need to a better job of not just providing the facts but providing the facts in a way that the end users can understand and appreciate.”
Dr. Sonawane and Dr. Osazuwa-Peters report no relevant financial relationships.
A version of this article first appeared on Medscape.com.
Adolescent immunizations and protecting our children from COVID-19
I began thinking of a topic for this column weeks ago determined to discuss anything except COVID-19. Yet, news reports from all sources blasted daily reminders of rising COVID-19 cases overall and specifically in children.
In August, school resumed for many of our patients and the battle over mandating masks for school attendance was in full swing. The fact that it is a Centers for Disease Control and Prevention recommendation supported by both the American Academy of Pediatrics and the Pediatric Infectious Disease Society fell on deaf ears. One day, I heard a report that over 25,000 students attending Texas public schools were diagnosed with COVID-19 between Aug. 23 and Aug. 29. This peak in activity occurred just 2 weeks after the start of school and led to the closure of 45 school districts. Texas does not have a monopoly on these rising cases. Delta, a more contagious variant, began circulating in June 2021 and by July it was the most predominant. Emergency department visits and hospitalizations have increased nationwide. During the latter 2 weeks of August 2021, COVID-19–related ED visits and hospitalizations for persons aged 0-17 years were 3.4 and 3.7 times higher in states with the lowest vaccination coverage, compared with states with high vaccination coverage (MMWR Morb Mortal Wkly Rep. 2021;70:1249-54). Specifically, the rates of hospitalization the week ending Aug. 14, 2021, were nearly 5 times the rates for the week ending June 26, 2021, for 0- to 17-year-olds and nearly 10 times the rates for children 0-4 years of age. Hospitalization rates were 10.1 times higher for unimmunized adolescents than for fully vaccinated ones (MMWR Morb Mortal Wkly Rep. 2021;70:1255-60).
Multiple elected state leaders have opposed interventions such as mandating masks in school, and our children are paying for it. These leaders have relinquished their responsibility to local school boards. Several have reinforced the no-mask mandate while others have had the courage and insight to ignore state government leaders and have established mask mandates.
How is this lack of enforcement of national recommendations affecting our patients? Let’s look at two neighboring school districts in Texas. School districts have COVID-19 dashboards that are updated daily and accessible to the general public. School District A requires masks for school entry. It serves 196,171 students and has 27,195 teachers and staff. Since school opened in August, 1,606 cumulative cases of COVID-19 in students (0.8%) and 282 in staff (1%) have been reported. Fifty-five percent of the student cases occurred in elementary schools. In contrast, School District B located in the adjacent county serves 64,517 students and has 3,906 teachers and staff with no mask mandate. Since August, there have been 4,506 cumulative COVID-19 cases in students (6.9%) and 578 (14.7%) in staff. Information regarding the specific school type was not provided; however, the dashboard indicates that 2,924 cases (64.8%) occurred in children younger than 11 years of age. County data indicate 62% of those older than 12 years of age were fully vaccinated in District A, compared with 54% of persons older than 12 years in District B. The county COVID-19 positivity rate in District A is 17.6% and in District B it is 20%. Both counties are experiencing increased COVID-19 activity yet have had strikingly different outcomes in the student/staff population. While supporting the case for wearing masks to prevent disease transmission, one can’t ignore the adolescents who were infected and vaccine eligible (District A: 706; District B: 1,582). Their vaccination status could not be determined.
As pediatricians we have played an integral part in the elimination of diseases through educating and administering vaccinations. Adolescents are relatively healthy, thus limiting the number of encounters with them. The majority complete the 11-year visit; however, many fail to return for the 16- to 18-year visit.
So how are we doing? CDC data from 10 U.S. jurisdictions demonstrated a substantial decrease in vaccine administration between March and May of 2020, compared with the same period in 2018 and 2019. A decline was anticipated because of the nationwide lockdown. Doses of HPV administered declined almost 64% and 71% for 9- to 12-year-olds and 13- to 17-year-olds, respectively. Tdap administration declined 66% and 61% for the same respective age groups. Although administered doses increased between June and September of 2020, it was not sufficient to achieve catch-up coverage. Compared to the same period in 2018-2019, administration of the HPV vaccine declined 12.8% and 28% (ages 9-12 and ages 13-17) and for Tdap it was 21% and 30% lower (ages 9-12 and ages 13-17) (MMWR Morb Mortal Wkly Rep. 2021;70:840-5).
Now, we have another adolescent vaccine to discuss and encourage our patients to receive. We also need to address their concerns and/or to at least direct them to a reliable source to obtain accurate information. For the first time, a recommended vaccine may not be available at their medical home. Many don’t know where to go to receive it (http://www.vaccines.gov). Results of a Kaiser Family Foundation COVID-19 survey (August 2021) indicated that parents trusted their pediatricians most often (78%) for vaccine advice. The respondents voiced concern about trusting the location where the child would be immunized and long-term effects especially related to fertility. Parents who received communications regarding the benefits of vaccination were twice as likely to have their adolescents immunized. Finally, remember: Like parent, like child. An immunized parent is more likely to immunize the adolescent. (See Fig. 1.)
It is beyond the scope of this column to discuss the psychosocial aspects of this disease: children experiencing the death of teachers, classmates, family members, and those viewing the vitriol between pro- and antimask proponents often exhibited on school premises. And let’s not forget the child who wants to wear a mask but may be ostracized or bullied for doing so.
Our job is to do our very best to advocate for and to protect our patients by promoting mandatory masks at schools and encouraging vaccination of adolescents as we patiently wait for vaccines to become available for all of our children.
Dr. Word is a pediatric infectious disease specialist and director of the Houston Travel Medicine Clinic. She said she had no relevant financial disclosures.
I began thinking of a topic for this column weeks ago determined to discuss anything except COVID-19. Yet, news reports from all sources blasted daily reminders of rising COVID-19 cases overall and specifically in children.
In August, school resumed for many of our patients and the battle over mandating masks for school attendance was in full swing. The fact that it is a Centers for Disease Control and Prevention recommendation supported by both the American Academy of Pediatrics and the Pediatric Infectious Disease Society fell on deaf ears. One day, I heard a report that over 25,000 students attending Texas public schools were diagnosed with COVID-19 between Aug. 23 and Aug. 29. This peak in activity occurred just 2 weeks after the start of school and led to the closure of 45 school districts. Texas does not have a monopoly on these rising cases. Delta, a more contagious variant, began circulating in June 2021 and by July it was the most predominant. Emergency department visits and hospitalizations have increased nationwide. During the latter 2 weeks of August 2021, COVID-19–related ED visits and hospitalizations for persons aged 0-17 years were 3.4 and 3.7 times higher in states with the lowest vaccination coverage, compared with states with high vaccination coverage (MMWR Morb Mortal Wkly Rep. 2021;70:1249-54). Specifically, the rates of hospitalization the week ending Aug. 14, 2021, were nearly 5 times the rates for the week ending June 26, 2021, for 0- to 17-year-olds and nearly 10 times the rates for children 0-4 years of age. Hospitalization rates were 10.1 times higher for unimmunized adolescents than for fully vaccinated ones (MMWR Morb Mortal Wkly Rep. 2021;70:1255-60).
Multiple elected state leaders have opposed interventions such as mandating masks in school, and our children are paying for it. These leaders have relinquished their responsibility to local school boards. Several have reinforced the no-mask mandate while others have had the courage and insight to ignore state government leaders and have established mask mandates.
How is this lack of enforcement of national recommendations affecting our patients? Let’s look at two neighboring school districts in Texas. School districts have COVID-19 dashboards that are updated daily and accessible to the general public. School District A requires masks for school entry. It serves 196,171 students and has 27,195 teachers and staff. Since school opened in August, 1,606 cumulative cases of COVID-19 in students (0.8%) and 282 in staff (1%) have been reported. Fifty-five percent of the student cases occurred in elementary schools. In contrast, School District B located in the adjacent county serves 64,517 students and has 3,906 teachers and staff with no mask mandate. Since August, there have been 4,506 cumulative COVID-19 cases in students (6.9%) and 578 (14.7%) in staff. Information regarding the specific school type was not provided; however, the dashboard indicates that 2,924 cases (64.8%) occurred in children younger than 11 years of age. County data indicate 62% of those older than 12 years of age were fully vaccinated in District A, compared with 54% of persons older than 12 years in District B. The county COVID-19 positivity rate in District A is 17.6% and in District B it is 20%. Both counties are experiencing increased COVID-19 activity yet have had strikingly different outcomes in the student/staff population. While supporting the case for wearing masks to prevent disease transmission, one can’t ignore the adolescents who were infected and vaccine eligible (District A: 706; District B: 1,582). Their vaccination status could not be determined.
As pediatricians we have played an integral part in the elimination of diseases through educating and administering vaccinations. Adolescents are relatively healthy, thus limiting the number of encounters with them. The majority complete the 11-year visit; however, many fail to return for the 16- to 18-year visit.
So how are we doing? CDC data from 10 U.S. jurisdictions demonstrated a substantial decrease in vaccine administration between March and May of 2020, compared with the same period in 2018 and 2019. A decline was anticipated because of the nationwide lockdown. Doses of HPV administered declined almost 64% and 71% for 9- to 12-year-olds and 13- to 17-year-olds, respectively. Tdap administration declined 66% and 61% for the same respective age groups. Although administered doses increased between June and September of 2020, it was not sufficient to achieve catch-up coverage. Compared to the same period in 2018-2019, administration of the HPV vaccine declined 12.8% and 28% (ages 9-12 and ages 13-17) and for Tdap it was 21% and 30% lower (ages 9-12 and ages 13-17) (MMWR Morb Mortal Wkly Rep. 2021;70:840-5).
Now, we have another adolescent vaccine to discuss and encourage our patients to receive. We also need to address their concerns and/or to at least direct them to a reliable source to obtain accurate information. For the first time, a recommended vaccine may not be available at their medical home. Many don’t know where to go to receive it (http://www.vaccines.gov). Results of a Kaiser Family Foundation COVID-19 survey (August 2021) indicated that parents trusted their pediatricians most often (78%) for vaccine advice. The respondents voiced concern about trusting the location where the child would be immunized and long-term effects especially related to fertility. Parents who received communications regarding the benefits of vaccination were twice as likely to have their adolescents immunized. Finally, remember: Like parent, like child. An immunized parent is more likely to immunize the adolescent. (See Fig. 1.)
It is beyond the scope of this column to discuss the psychosocial aspects of this disease: children experiencing the death of teachers, classmates, family members, and those viewing the vitriol between pro- and antimask proponents often exhibited on school premises. And let’s not forget the child who wants to wear a mask but may be ostracized or bullied for doing so.
Our job is to do our very best to advocate for and to protect our patients by promoting mandatory masks at schools and encouraging vaccination of adolescents as we patiently wait for vaccines to become available for all of our children.
Dr. Word is a pediatric infectious disease specialist and director of the Houston Travel Medicine Clinic. She said she had no relevant financial disclosures.
I began thinking of a topic for this column weeks ago determined to discuss anything except COVID-19. Yet, news reports from all sources blasted daily reminders of rising COVID-19 cases overall and specifically in children.
In August, school resumed for many of our patients and the battle over mandating masks for school attendance was in full swing. The fact that it is a Centers for Disease Control and Prevention recommendation supported by both the American Academy of Pediatrics and the Pediatric Infectious Disease Society fell on deaf ears. One day, I heard a report that over 25,000 students attending Texas public schools were diagnosed with COVID-19 between Aug. 23 and Aug. 29. This peak in activity occurred just 2 weeks after the start of school and led to the closure of 45 school districts. Texas does not have a monopoly on these rising cases. Delta, a more contagious variant, began circulating in June 2021 and by July it was the most predominant. Emergency department visits and hospitalizations have increased nationwide. During the latter 2 weeks of August 2021, COVID-19–related ED visits and hospitalizations for persons aged 0-17 years were 3.4 and 3.7 times higher in states with the lowest vaccination coverage, compared with states with high vaccination coverage (MMWR Morb Mortal Wkly Rep. 2021;70:1249-54). Specifically, the rates of hospitalization the week ending Aug. 14, 2021, were nearly 5 times the rates for the week ending June 26, 2021, for 0- to 17-year-olds and nearly 10 times the rates for children 0-4 years of age. Hospitalization rates were 10.1 times higher for unimmunized adolescents than for fully vaccinated ones (MMWR Morb Mortal Wkly Rep. 2021;70:1255-60).
Multiple elected state leaders have opposed interventions such as mandating masks in school, and our children are paying for it. These leaders have relinquished their responsibility to local school boards. Several have reinforced the no-mask mandate while others have had the courage and insight to ignore state government leaders and have established mask mandates.
How is this lack of enforcement of national recommendations affecting our patients? Let’s look at two neighboring school districts in Texas. School districts have COVID-19 dashboards that are updated daily and accessible to the general public. School District A requires masks for school entry. It serves 196,171 students and has 27,195 teachers and staff. Since school opened in August, 1,606 cumulative cases of COVID-19 in students (0.8%) and 282 in staff (1%) have been reported. Fifty-five percent of the student cases occurred in elementary schools. In contrast, School District B located in the adjacent county serves 64,517 students and has 3,906 teachers and staff with no mask mandate. Since August, there have been 4,506 cumulative COVID-19 cases in students (6.9%) and 578 (14.7%) in staff. Information regarding the specific school type was not provided; however, the dashboard indicates that 2,924 cases (64.8%) occurred in children younger than 11 years of age. County data indicate 62% of those older than 12 years of age were fully vaccinated in District A, compared with 54% of persons older than 12 years in District B. The county COVID-19 positivity rate in District A is 17.6% and in District B it is 20%. Both counties are experiencing increased COVID-19 activity yet have had strikingly different outcomes in the student/staff population. While supporting the case for wearing masks to prevent disease transmission, one can’t ignore the adolescents who were infected and vaccine eligible (District A: 706; District B: 1,582). Their vaccination status could not be determined.
As pediatricians we have played an integral part in the elimination of diseases through educating and administering vaccinations. Adolescents are relatively healthy, thus limiting the number of encounters with them. The majority complete the 11-year visit; however, many fail to return for the 16- to 18-year visit.
So how are we doing? CDC data from 10 U.S. jurisdictions demonstrated a substantial decrease in vaccine administration between March and May of 2020, compared with the same period in 2018 and 2019. A decline was anticipated because of the nationwide lockdown. Doses of HPV administered declined almost 64% and 71% for 9- to 12-year-olds and 13- to 17-year-olds, respectively. Tdap administration declined 66% and 61% for the same respective age groups. Although administered doses increased between June and September of 2020, it was not sufficient to achieve catch-up coverage. Compared to the same period in 2018-2019, administration of the HPV vaccine declined 12.8% and 28% (ages 9-12 and ages 13-17) and for Tdap it was 21% and 30% lower (ages 9-12 and ages 13-17) (MMWR Morb Mortal Wkly Rep. 2021;70:840-5).
Now, we have another adolescent vaccine to discuss and encourage our patients to receive. We also need to address their concerns and/or to at least direct them to a reliable source to obtain accurate information. For the first time, a recommended vaccine may not be available at their medical home. Many don’t know where to go to receive it (http://www.vaccines.gov). Results of a Kaiser Family Foundation COVID-19 survey (August 2021) indicated that parents trusted their pediatricians most often (78%) for vaccine advice. The respondents voiced concern about trusting the location where the child would be immunized and long-term effects especially related to fertility. Parents who received communications regarding the benefits of vaccination were twice as likely to have their adolescents immunized. Finally, remember: Like parent, like child. An immunized parent is more likely to immunize the adolescent. (See Fig. 1.)
It is beyond the scope of this column to discuss the psychosocial aspects of this disease: children experiencing the death of teachers, classmates, family members, and those viewing the vitriol between pro- and antimask proponents often exhibited on school premises. And let’s not forget the child who wants to wear a mask but may be ostracized or bullied for doing so.
Our job is to do our very best to advocate for and to protect our patients by promoting mandatory masks at schools and encouraging vaccination of adolescents as we patiently wait for vaccines to become available for all of our children.
Dr. Word is a pediatric infectious disease specialist and director of the Houston Travel Medicine Clinic. She said she had no relevant financial disclosures.
Moderna vaccine more effective than Pfizer and J&J
the Centers for Disease Control and Protection has said.
“Among U.S. adults without immunocompromising conditions, vaccine effectiveness against COVID-19 hospitalization during March 11–Aug. 15, 2021, was higher for the Moderna vaccine (93%) than the Pfizer-BioNTech vaccine (88%) and the Janssen vaccine (71%),” the agency’s Morbidity and Mortality Weekly Report said. Janssen refers to the Johnson & Johnson vaccine.
The CDC said the data could help people make informed decisions.
“Understanding differences in VE [vaccine effectiveness] by vaccine product can guide individual choices and policy recommendations regarding vaccine boosters. All Food and Drug Administration–approved or authorized COVID-19 vaccines provide substantial protection against COVID-19 hospitalization,” the report said.
The study also broke down effectiveness for longer periods. Moderna came out on top again.
After 120 days, the Moderna vaccine provided 92% effectiveness against hospitalization, whereas the Pfizer vaccine’s effectiveness dropped to 77%, the CDC said. There was no similar calculation for the Johnson & Johnson vaccine.
The CDC studied 3,689 adults at 21 hospitals in 18 states who got the two-shot Pfizer or Moderna vaccine or the one-shot Johnson & Johnson vaccine between March and August.
The agency noted some factors that could have come into play.
“Differences in vaccine effectiveness between the Moderna and Pfizer-BioNTech vaccine might be due to higher mRNA content in the Moderna vaccine, differences in timing between doses (3 weeks for Pfizer-BioNTech vs. 4 weeks for Moderna), or possible differences between groups that received each vaccine that were not accounted for in the analysis,” the report said.
The CDC noted limitations in the findings. Children, immunocompromised adults, and vaccine effectiveness against COVID-19 that did not result in hospitalization were not studied.
Other studies have shown all three U.S. vaccines provide a high rate of protection against coronavirus.
A version of this article first appeared on WebMD.com.
the Centers for Disease Control and Protection has said.
“Among U.S. adults without immunocompromising conditions, vaccine effectiveness against COVID-19 hospitalization during March 11–Aug. 15, 2021, was higher for the Moderna vaccine (93%) than the Pfizer-BioNTech vaccine (88%) and the Janssen vaccine (71%),” the agency’s Morbidity and Mortality Weekly Report said. Janssen refers to the Johnson & Johnson vaccine.
The CDC said the data could help people make informed decisions.
“Understanding differences in VE [vaccine effectiveness] by vaccine product can guide individual choices and policy recommendations regarding vaccine boosters. All Food and Drug Administration–approved or authorized COVID-19 vaccines provide substantial protection against COVID-19 hospitalization,” the report said.
The study also broke down effectiveness for longer periods. Moderna came out on top again.
After 120 days, the Moderna vaccine provided 92% effectiveness against hospitalization, whereas the Pfizer vaccine’s effectiveness dropped to 77%, the CDC said. There was no similar calculation for the Johnson & Johnson vaccine.
The CDC studied 3,689 adults at 21 hospitals in 18 states who got the two-shot Pfizer or Moderna vaccine or the one-shot Johnson & Johnson vaccine between March and August.
The agency noted some factors that could have come into play.
“Differences in vaccine effectiveness between the Moderna and Pfizer-BioNTech vaccine might be due to higher mRNA content in the Moderna vaccine, differences in timing between doses (3 weeks for Pfizer-BioNTech vs. 4 weeks for Moderna), or possible differences between groups that received each vaccine that were not accounted for in the analysis,” the report said.
The CDC noted limitations in the findings. Children, immunocompromised adults, and vaccine effectiveness against COVID-19 that did not result in hospitalization were not studied.
Other studies have shown all three U.S. vaccines provide a high rate of protection against coronavirus.
A version of this article first appeared on WebMD.com.
the Centers for Disease Control and Protection has said.
“Among U.S. adults without immunocompromising conditions, vaccine effectiveness against COVID-19 hospitalization during March 11–Aug. 15, 2021, was higher for the Moderna vaccine (93%) than the Pfizer-BioNTech vaccine (88%) and the Janssen vaccine (71%),” the agency’s Morbidity and Mortality Weekly Report said. Janssen refers to the Johnson & Johnson vaccine.
The CDC said the data could help people make informed decisions.
“Understanding differences in VE [vaccine effectiveness] by vaccine product can guide individual choices and policy recommendations regarding vaccine boosters. All Food and Drug Administration–approved or authorized COVID-19 vaccines provide substantial protection against COVID-19 hospitalization,” the report said.
The study also broke down effectiveness for longer periods. Moderna came out on top again.
After 120 days, the Moderna vaccine provided 92% effectiveness against hospitalization, whereas the Pfizer vaccine’s effectiveness dropped to 77%, the CDC said. There was no similar calculation for the Johnson & Johnson vaccine.
The CDC studied 3,689 adults at 21 hospitals in 18 states who got the two-shot Pfizer or Moderna vaccine or the one-shot Johnson & Johnson vaccine between March and August.
The agency noted some factors that could have come into play.
“Differences in vaccine effectiveness between the Moderna and Pfizer-BioNTech vaccine might be due to higher mRNA content in the Moderna vaccine, differences in timing between doses (3 weeks for Pfizer-BioNTech vs. 4 weeks for Moderna), or possible differences between groups that received each vaccine that were not accounted for in the analysis,” the report said.
The CDC noted limitations in the findings. Children, immunocompromised adults, and vaccine effectiveness against COVID-19 that did not result in hospitalization were not studied.
Other studies have shown all three U.S. vaccines provide a high rate of protection against coronavirus.
A version of this article first appeared on WebMD.com.
COVID vaccine is safe, effective for children aged 5-11, Pfizer says
With record numbers of COVID-19 cases being reported in kids, Pfizer and its partner BioNTech have announced that their mRNA vaccine for COVID-19 is safe and appears to generate a protective immune response in children as young as 5.
The companies have been testing a lower dose of the vaccine -- just 10 milligrams -- in children between the ages of 5 and 11. That’s one-third the dose given to adults.
In a clinical trial that included more than 2,200 children, Pfizer says two doses of the vaccines given 3 weeks apart generated a high level of neutralizing antibodies, comparable to the level seen in older children who get a higher dose of the vaccine.
On the advice of its vaccine advisory committee, the Food and Drug Administration asked vaccine makers to include more children in these studies earlier this year.
Rather than testing whether the vaccines are preventing COVID-19 illness in children, as they did in adults, the pharmaceutical companies that make the COVID-19 vaccines are looking at the antibody levels generated by the vaccines instead. The FDA has approved the approach in hopes of speeding vaccines to children, who are now back in school full time in most parts of the United States.
With that in mind, Evan Anderson, MD, a doctor with Children’s Healthcare of Atlanta who is an investigator for the trial — and is therefore kept in the dark about its results — said it’s important to keep in mind that the company didn’t share any efficacy data today.
“We don’t know whether there were cases of COVID-19 among children that were enrolled in the study and how those compared in those who received placebo versus those that received vaccine,” he said.
The company says side effects seen in the trial are comparable to those seen in older children. The company said there were no cases of heart inflammation called myocarditis observed. Pfizer says they plan to send their data to the FDA as soon as possible.
The company says side effects seen in the trial are comparable to those seen in older children. Pfizer says they plan to send their data to the FDA as soon as possible.
“We are pleased to be able to submit data to regulatory authorities for this group of school-aged children before the start of the winter season,” Ugur Sahin, MD, CEO and co-founder of BioNTech, said in a news release. “The safety profile and immunogenicity data in children aged 5 to 11 years vaccinated at a lower dose are consistent with those we have observed with our vaccine in other older populations at a higher dose.”
When asked how soon the FDA might act on Pfizer’s application, Anderson said others had speculated about timelines of 4 to 6 weeks, but he also noted that the FDA could still exercise its authority to ask the company for more information, which could slow the process down.
“As a parent myself, I would love to see that timeline occurring quickly. However, I do want the FDA to fully review the data and ask the necessary questions,” he said. “It’s a little speculative to get too definitive with timelines.”
A version of this article first appeared on WebMD.com.
With record numbers of COVID-19 cases being reported in kids, Pfizer and its partner BioNTech have announced that their mRNA vaccine for COVID-19 is safe and appears to generate a protective immune response in children as young as 5.
The companies have been testing a lower dose of the vaccine -- just 10 milligrams -- in children between the ages of 5 and 11. That’s one-third the dose given to adults.
In a clinical trial that included more than 2,200 children, Pfizer says two doses of the vaccines given 3 weeks apart generated a high level of neutralizing antibodies, comparable to the level seen in older children who get a higher dose of the vaccine.
On the advice of its vaccine advisory committee, the Food and Drug Administration asked vaccine makers to include more children in these studies earlier this year.
Rather than testing whether the vaccines are preventing COVID-19 illness in children, as they did in adults, the pharmaceutical companies that make the COVID-19 vaccines are looking at the antibody levels generated by the vaccines instead. The FDA has approved the approach in hopes of speeding vaccines to children, who are now back in school full time in most parts of the United States.
With that in mind, Evan Anderson, MD, a doctor with Children’s Healthcare of Atlanta who is an investigator for the trial — and is therefore kept in the dark about its results — said it’s important to keep in mind that the company didn’t share any efficacy data today.
“We don’t know whether there were cases of COVID-19 among children that were enrolled in the study and how those compared in those who received placebo versus those that received vaccine,” he said.
The company says side effects seen in the trial are comparable to those seen in older children. The company said there were no cases of heart inflammation called myocarditis observed. Pfizer says they plan to send their data to the FDA as soon as possible.
The company says side effects seen in the trial are comparable to those seen in older children. Pfizer says they plan to send their data to the FDA as soon as possible.
“We are pleased to be able to submit data to regulatory authorities for this group of school-aged children before the start of the winter season,” Ugur Sahin, MD, CEO and co-founder of BioNTech, said in a news release. “The safety profile and immunogenicity data in children aged 5 to 11 years vaccinated at a lower dose are consistent with those we have observed with our vaccine in other older populations at a higher dose.”
When asked how soon the FDA might act on Pfizer’s application, Anderson said others had speculated about timelines of 4 to 6 weeks, but he also noted that the FDA could still exercise its authority to ask the company for more information, which could slow the process down.
“As a parent myself, I would love to see that timeline occurring quickly. However, I do want the FDA to fully review the data and ask the necessary questions,” he said. “It’s a little speculative to get too definitive with timelines.”
A version of this article first appeared on WebMD.com.
With record numbers of COVID-19 cases being reported in kids, Pfizer and its partner BioNTech have announced that their mRNA vaccine for COVID-19 is safe and appears to generate a protective immune response in children as young as 5.
The companies have been testing a lower dose of the vaccine -- just 10 milligrams -- in children between the ages of 5 and 11. That’s one-third the dose given to adults.
In a clinical trial that included more than 2,200 children, Pfizer says two doses of the vaccines given 3 weeks apart generated a high level of neutralizing antibodies, comparable to the level seen in older children who get a higher dose of the vaccine.
On the advice of its vaccine advisory committee, the Food and Drug Administration asked vaccine makers to include more children in these studies earlier this year.
Rather than testing whether the vaccines are preventing COVID-19 illness in children, as they did in adults, the pharmaceutical companies that make the COVID-19 vaccines are looking at the antibody levels generated by the vaccines instead. The FDA has approved the approach in hopes of speeding vaccines to children, who are now back in school full time in most parts of the United States.
With that in mind, Evan Anderson, MD, a doctor with Children’s Healthcare of Atlanta who is an investigator for the trial — and is therefore kept in the dark about its results — said it’s important to keep in mind that the company didn’t share any efficacy data today.
“We don’t know whether there were cases of COVID-19 among children that were enrolled in the study and how those compared in those who received placebo versus those that received vaccine,” he said.
The company says side effects seen in the trial are comparable to those seen in older children. The company said there were no cases of heart inflammation called myocarditis observed. Pfizer says they plan to send their data to the FDA as soon as possible.
The company says side effects seen in the trial are comparable to those seen in older children. Pfizer says they plan to send their data to the FDA as soon as possible.
“We are pleased to be able to submit data to regulatory authorities for this group of school-aged children before the start of the winter season,” Ugur Sahin, MD, CEO and co-founder of BioNTech, said in a news release. “The safety profile and immunogenicity data in children aged 5 to 11 years vaccinated at a lower dose are consistent with those we have observed with our vaccine in other older populations at a higher dose.”
When asked how soon the FDA might act on Pfizer’s application, Anderson said others had speculated about timelines of 4 to 6 weeks, but he also noted that the FDA could still exercise its authority to ask the company for more information, which could slow the process down.
“As a parent myself, I would love to see that timeline occurring quickly. However, I do want the FDA to fully review the data and ask the necessary questions,” he said. “It’s a little speculative to get too definitive with timelines.”
A version of this article first appeared on WebMD.com.
FDA panel backs Pfizer's COVID booster for 65 and older, those at high risk
An expert panel that advises the Food and Drug Administration on its regulatory decisions voted Sept. 17 against recommending third doses of Pfizer’s COVID-19 vaccine for younger Americans.
But they didn’t kill the idea of booster shots completely.
In a dramatic, last-minute pivot, the 18 members of the FDA’s Vaccines and Related Biological Products Advisory Committee unanimously voted to recommend the FDA make boosters available for seniors and others at high risk of severe outcomes from COVID-19, including health care workers.
The 16-2 vote was a rebuttal to Pfizer’s initial request. The company had asked the FDA to allow it to offer third doses to all Americans over the age of 16 at least six months after their second shot.
The company requested an amendment to the full approval the FDA granted in August. That is the typical way boosters are authorized in the U.S., but it requires a higher bar of evidence and more regulatory scrutiny than the agency had been able to give since Pfizer filed for the change just days after its vaccine was granted full approval.
The committee’s actions were also a rebuff to the Biden administration, which announced before the FDA approved them that boosters would be rolled out to the general public Sept. 20. The announcement triggered the resignations of two of the agency’s top vaccine reviewers, who both participated in the Sept. 17 meeting.
After initially voting against Pfizer’s request to amend its license, the committee then worked on the fly with FDA officials to craft a strategy that would allow third doses to be offered under an emergency use authorization (EUA).
An EUA requires a lower standard of evidence and is more specific. It will restrict third doses to a more defined population than a change to the license would. It will also require Pfizer to continue to monitor the safety of third doses as they begin to be administered.
“This should demonstrate to the public that the members of this committee are independent of the FDA and that we do, in fact, bring our voices to the table when we are asked to serve on this committee,” said Archana Chattergee, MD, a pediatric infectious disease specialist who is dean of the Chicago Medical School at Rosalind Franklin University in Illinois.
The FDA doesn’t have to follow the committee’s recommendation, but almost certainly will, though regulators said they may still make some changes.
“We are not bound at FDA by your vote, we can tweak this,” said Peter Marks, MD, director of the Center for Biologics Evaluation and Research at the FDA. Dr. Marks participated in the meeting and helped to draft the revised proposal.
If the FDA issues the recommended EUA, a council of independent advisors to the CDC will make specific recommendations about how the third doses should be given. After the CDC director weighs in, boosters will begin rolling out to the public.
Moderna submitted data to the FDA on Sept. 1 in support of adding a booster dose to its regimen. The agency has not yet scheduled a public review of that data.
The Biden administration is prepared to administer shots as soon as they get the green light, Surgeon General Vivek Murthy, MD, said at a White House briefing earlier Sept. 17.
"This process is consistent with what we outlined in August where our goals were to stay ahead of the virus," Dr. Murthy said. "Our goal then and now is to protect the health and well-being of the public. As soon as the FDA and CDC complete their evaluations, we will be ready to move forward accordingly."
He added, "We've used this time since our August announcement to communicate and coordinate with pharmacy partners, nursing homes, states, and localities."
White House COVID-19 Response Coordinator Jeff Zients said vaccine supply is "in good shape for all Americans to get boosters as recommended."
Taking cues from Israel
In considering Pfizer’s original request, the committee overwhelmingly felt that they didn’t have enough information to say that the benefits of an additional dose of vaccine in 16- and 17-year-olds would outweigh its risk. Teens have the highest risk of rare heart inflammation after vaccination, a side effect known as myocarditis. It is not known how the vaccines are causing these cases of heart swelling. Most who have been diagnosed with the condition have recovered, though some have needed hospital care.
Pfizer didn’t include 16- and 17-year-olds in its studies of boosters, which included about 300 people between the ages of 18 and 55. The company acknowledged that gap in its data but pointed to FDA guidance that said evidence from adults could be extrapolated to teens.
“We don’t know that much about risks,” said committee member Eric Rubin, MD, who is editor-in-chief of the New England Journal of Medicine.
Much of the data on the potential benefits and harms of third Pfizer doses comes from Israel, which first began rolling out boosters to older adults in July.
In a highly anticipated presentation, Sharon Alroy-Preis, Israel’s director of public health services, joined the meeting to describe Israel’s experience with boosters.
Israel began to see a third surge of COVID-19 cases in December.
“This was after having two waves and two lockdowns,” Ms. Alroy-Preis said. By the third surge, she said, Israelis were tired.
“We decided on a lockdown, but the compliance of the public wasn’t as it was in the previous two waves,” she said.
Then the vaccine arrived. Israel started vaccinations as soon as the FDA approved it, and they quickly vaccinated a high percentage of their population, about 3 months faster than the rest of the world.
All vaccinations are reported and tracked by the Ministry of Health, so the country is able to keep close tabs on how well the shots are working.
As vaccines rolled out, cases fell dramatically. The pandemic seemed to be behind them. Delta arrived in March. By June, their cases were doubling every 10 days, despite about 80% of their most vulnerable adults being fully vaccinated, she said.
Most concerning was that about 60% of severe cases were breakthrough cases in fully vaccinated individuals.
“We had to stop and figure out, was this a Delta issue,” she said. “Or was this a waning immunity issue.”
“We had some clue that it might not be the Delta variant, at least not alone,” she said.
People who had originally been first in line for the vaccines, seniors and health care workers, were having the highest rates of breakthrough infections. People further away from their second dose were more likely to get a breakthrough infection.
Ms. Alroy-Preis said that if they had not started booster doses in July, their hospitals would have been overwhelmed. They had projected that they would have 2,000 cases in the hospital each day.
Boosters have helped to flatten the curve, though they are still seeing a significant number of infections.
Data from Israel presented at the meeting show boosters are largely safe and effective at reducing severe outcomes in seniors. Israeli experience also showed that third doses, which generate very high levels of neutralizing antibodies—the first and fastest line of the body’s immune defense - -may also slow transmission of the virus.
Key differences in the U.S.
The benefit of slowing down the explosive spread of a highly contagious virus was tantalizing, but many members noted that circumstances in Israel are very different than in the United States. Israel went into its current Delta surge already having high levels of vaccination in its population. They also relied on the Pfizer vaccine almost exclusively for their campaign.
The United States used a different mix of vaccines – Pfizer, Moderna, and Johnson & Johnson -- and doesn’t have the same high level of vaccination coverage of its population.
In the United States, transmission is mainly being driven by unvaccinated people, Dr. Rubin noted.
“That really means the primary benefit is going to be in reducing disease,” he said, “And we know the people who are going to benefit from that … and those are the kinds of people the FDA has already approved a third dose for,” he said, referring to those with underlying health conditions.
But Israel only began vaccinating younger people a few weeks ago. Most are still within a window where rare risks like myocarditis could appear, Rubin noted.
He and other members of the committee said they wished they had more information about the safety of third doses in younger adults.
“We don’t have that right now, and I don’t think I would be comfortable giving it to a 16-year-old,” he said.
At the same time, the primary benefit for third doses would be in preventing severe disease, and overall, data from the United States and other countries show that two doses of the vaccines remain highly effective at preventing hospitalization and death.
Asked why Israel began to see more severe cases in fully vaccinated people, the CDC’s Sara Oliver, MD, a disease detective with the CDC, said it was probably due to a mix of factors including the fact that Israel defines severe cases a little differently.
In the United States, a severe case is generally a person who has to be hospitalized or who has died from the infection. In Israel, a person with a severe case is someone who has an elevated respiratory rate and someone who has a blood oxygen level less than 94%. In the United States, that kind of patient wouldn’t necessarily be hospitalized.
In the end, one of the two committee members who wanted full approval for Pfizer’s third doses said he was satisfied with the outcome.
Mark Sawyer, MD, a professor of pediatrics and infectious disease at the University of California at San Diego, said he voted yes on the first question because he thought full approval was the best way to give doctors the flexibility to prescribe the shots to vulnerable individuals.
“I’m really glad we authorized a vaccine for a third dose, and I plan to go out and get my vaccine this afternoon,” Dr. Sawyer said, noting that he was at high risk as a health care provider.
This article was updated 9/19/21.
A version of this article first appeared on Medscape.com.
An expert panel that advises the Food and Drug Administration on its regulatory decisions voted Sept. 17 against recommending third doses of Pfizer’s COVID-19 vaccine for younger Americans.
But they didn’t kill the idea of booster shots completely.
In a dramatic, last-minute pivot, the 18 members of the FDA’s Vaccines and Related Biological Products Advisory Committee unanimously voted to recommend the FDA make boosters available for seniors and others at high risk of severe outcomes from COVID-19, including health care workers.
The 16-2 vote was a rebuttal to Pfizer’s initial request. The company had asked the FDA to allow it to offer third doses to all Americans over the age of 16 at least six months after their second shot.
The company requested an amendment to the full approval the FDA granted in August. That is the typical way boosters are authorized in the U.S., but it requires a higher bar of evidence and more regulatory scrutiny than the agency had been able to give since Pfizer filed for the change just days after its vaccine was granted full approval.
The committee’s actions were also a rebuff to the Biden administration, which announced before the FDA approved them that boosters would be rolled out to the general public Sept. 20. The announcement triggered the resignations of two of the agency’s top vaccine reviewers, who both participated in the Sept. 17 meeting.
After initially voting against Pfizer’s request to amend its license, the committee then worked on the fly with FDA officials to craft a strategy that would allow third doses to be offered under an emergency use authorization (EUA).
An EUA requires a lower standard of evidence and is more specific. It will restrict third doses to a more defined population than a change to the license would. It will also require Pfizer to continue to monitor the safety of third doses as they begin to be administered.
“This should demonstrate to the public that the members of this committee are independent of the FDA and that we do, in fact, bring our voices to the table when we are asked to serve on this committee,” said Archana Chattergee, MD, a pediatric infectious disease specialist who is dean of the Chicago Medical School at Rosalind Franklin University in Illinois.
The FDA doesn’t have to follow the committee’s recommendation, but almost certainly will, though regulators said they may still make some changes.
“We are not bound at FDA by your vote, we can tweak this,” said Peter Marks, MD, director of the Center for Biologics Evaluation and Research at the FDA. Dr. Marks participated in the meeting and helped to draft the revised proposal.
If the FDA issues the recommended EUA, a council of independent advisors to the CDC will make specific recommendations about how the third doses should be given. After the CDC director weighs in, boosters will begin rolling out to the public.
Moderna submitted data to the FDA on Sept. 1 in support of adding a booster dose to its regimen. The agency has not yet scheduled a public review of that data.
The Biden administration is prepared to administer shots as soon as they get the green light, Surgeon General Vivek Murthy, MD, said at a White House briefing earlier Sept. 17.
"This process is consistent with what we outlined in August where our goals were to stay ahead of the virus," Dr. Murthy said. "Our goal then and now is to protect the health and well-being of the public. As soon as the FDA and CDC complete their evaluations, we will be ready to move forward accordingly."
He added, "We've used this time since our August announcement to communicate and coordinate with pharmacy partners, nursing homes, states, and localities."
White House COVID-19 Response Coordinator Jeff Zients said vaccine supply is "in good shape for all Americans to get boosters as recommended."
Taking cues from Israel
In considering Pfizer’s original request, the committee overwhelmingly felt that they didn’t have enough information to say that the benefits of an additional dose of vaccine in 16- and 17-year-olds would outweigh its risk. Teens have the highest risk of rare heart inflammation after vaccination, a side effect known as myocarditis. It is not known how the vaccines are causing these cases of heart swelling. Most who have been diagnosed with the condition have recovered, though some have needed hospital care.
Pfizer didn’t include 16- and 17-year-olds in its studies of boosters, which included about 300 people between the ages of 18 and 55. The company acknowledged that gap in its data but pointed to FDA guidance that said evidence from adults could be extrapolated to teens.
“We don’t know that much about risks,” said committee member Eric Rubin, MD, who is editor-in-chief of the New England Journal of Medicine.
Much of the data on the potential benefits and harms of third Pfizer doses comes from Israel, which first began rolling out boosters to older adults in July.
In a highly anticipated presentation, Sharon Alroy-Preis, Israel’s director of public health services, joined the meeting to describe Israel’s experience with boosters.
Israel began to see a third surge of COVID-19 cases in December.
“This was after having two waves and two lockdowns,” Ms. Alroy-Preis said. By the third surge, she said, Israelis were tired.
“We decided on a lockdown, but the compliance of the public wasn’t as it was in the previous two waves,” she said.
Then the vaccine arrived. Israel started vaccinations as soon as the FDA approved it, and they quickly vaccinated a high percentage of their population, about 3 months faster than the rest of the world.
All vaccinations are reported and tracked by the Ministry of Health, so the country is able to keep close tabs on how well the shots are working.
As vaccines rolled out, cases fell dramatically. The pandemic seemed to be behind them. Delta arrived in March. By June, their cases were doubling every 10 days, despite about 80% of their most vulnerable adults being fully vaccinated, she said.
Most concerning was that about 60% of severe cases were breakthrough cases in fully vaccinated individuals.
“We had to stop and figure out, was this a Delta issue,” she said. “Or was this a waning immunity issue.”
“We had some clue that it might not be the Delta variant, at least not alone,” she said.
People who had originally been first in line for the vaccines, seniors and health care workers, were having the highest rates of breakthrough infections. People further away from their second dose were more likely to get a breakthrough infection.
Ms. Alroy-Preis said that if they had not started booster doses in July, their hospitals would have been overwhelmed. They had projected that they would have 2,000 cases in the hospital each day.
Boosters have helped to flatten the curve, though they are still seeing a significant number of infections.
Data from Israel presented at the meeting show boosters are largely safe and effective at reducing severe outcomes in seniors. Israeli experience also showed that third doses, which generate very high levels of neutralizing antibodies—the first and fastest line of the body’s immune defense - -may also slow transmission of the virus.
Key differences in the U.S.
The benefit of slowing down the explosive spread of a highly contagious virus was tantalizing, but many members noted that circumstances in Israel are very different than in the United States. Israel went into its current Delta surge already having high levels of vaccination in its population. They also relied on the Pfizer vaccine almost exclusively for their campaign.
The United States used a different mix of vaccines – Pfizer, Moderna, and Johnson & Johnson -- and doesn’t have the same high level of vaccination coverage of its population.
In the United States, transmission is mainly being driven by unvaccinated people, Dr. Rubin noted.
“That really means the primary benefit is going to be in reducing disease,” he said, “And we know the people who are going to benefit from that … and those are the kinds of people the FDA has already approved a third dose for,” he said, referring to those with underlying health conditions.
But Israel only began vaccinating younger people a few weeks ago. Most are still within a window where rare risks like myocarditis could appear, Rubin noted.
He and other members of the committee said they wished they had more information about the safety of third doses in younger adults.
“We don’t have that right now, and I don’t think I would be comfortable giving it to a 16-year-old,” he said.
At the same time, the primary benefit for third doses would be in preventing severe disease, and overall, data from the United States and other countries show that two doses of the vaccines remain highly effective at preventing hospitalization and death.
Asked why Israel began to see more severe cases in fully vaccinated people, the CDC’s Sara Oliver, MD, a disease detective with the CDC, said it was probably due to a mix of factors including the fact that Israel defines severe cases a little differently.
In the United States, a severe case is generally a person who has to be hospitalized or who has died from the infection. In Israel, a person with a severe case is someone who has an elevated respiratory rate and someone who has a blood oxygen level less than 94%. In the United States, that kind of patient wouldn’t necessarily be hospitalized.
In the end, one of the two committee members who wanted full approval for Pfizer’s third doses said he was satisfied with the outcome.
Mark Sawyer, MD, a professor of pediatrics and infectious disease at the University of California at San Diego, said he voted yes on the first question because he thought full approval was the best way to give doctors the flexibility to prescribe the shots to vulnerable individuals.
“I’m really glad we authorized a vaccine for a third dose, and I plan to go out and get my vaccine this afternoon,” Dr. Sawyer said, noting that he was at high risk as a health care provider.
This article was updated 9/19/21.
A version of this article first appeared on Medscape.com.
An expert panel that advises the Food and Drug Administration on its regulatory decisions voted Sept. 17 against recommending third doses of Pfizer’s COVID-19 vaccine for younger Americans.
But they didn’t kill the idea of booster shots completely.
In a dramatic, last-minute pivot, the 18 members of the FDA’s Vaccines and Related Biological Products Advisory Committee unanimously voted to recommend the FDA make boosters available for seniors and others at high risk of severe outcomes from COVID-19, including health care workers.
The 16-2 vote was a rebuttal to Pfizer’s initial request. The company had asked the FDA to allow it to offer third doses to all Americans over the age of 16 at least six months after their second shot.
The company requested an amendment to the full approval the FDA granted in August. That is the typical way boosters are authorized in the U.S., but it requires a higher bar of evidence and more regulatory scrutiny than the agency had been able to give since Pfizer filed for the change just days after its vaccine was granted full approval.
The committee’s actions were also a rebuff to the Biden administration, which announced before the FDA approved them that boosters would be rolled out to the general public Sept. 20. The announcement triggered the resignations of two of the agency’s top vaccine reviewers, who both participated in the Sept. 17 meeting.
After initially voting against Pfizer’s request to amend its license, the committee then worked on the fly with FDA officials to craft a strategy that would allow third doses to be offered under an emergency use authorization (EUA).
An EUA requires a lower standard of evidence and is more specific. It will restrict third doses to a more defined population than a change to the license would. It will also require Pfizer to continue to monitor the safety of third doses as they begin to be administered.
“This should demonstrate to the public that the members of this committee are independent of the FDA and that we do, in fact, bring our voices to the table when we are asked to serve on this committee,” said Archana Chattergee, MD, a pediatric infectious disease specialist who is dean of the Chicago Medical School at Rosalind Franklin University in Illinois.
The FDA doesn’t have to follow the committee’s recommendation, but almost certainly will, though regulators said they may still make some changes.
“We are not bound at FDA by your vote, we can tweak this,” said Peter Marks, MD, director of the Center for Biologics Evaluation and Research at the FDA. Dr. Marks participated in the meeting and helped to draft the revised proposal.
If the FDA issues the recommended EUA, a council of independent advisors to the CDC will make specific recommendations about how the third doses should be given. After the CDC director weighs in, boosters will begin rolling out to the public.
Moderna submitted data to the FDA on Sept. 1 in support of adding a booster dose to its regimen. The agency has not yet scheduled a public review of that data.
The Biden administration is prepared to administer shots as soon as they get the green light, Surgeon General Vivek Murthy, MD, said at a White House briefing earlier Sept. 17.
"This process is consistent with what we outlined in August where our goals were to stay ahead of the virus," Dr. Murthy said. "Our goal then and now is to protect the health and well-being of the public. As soon as the FDA and CDC complete their evaluations, we will be ready to move forward accordingly."
He added, "We've used this time since our August announcement to communicate and coordinate with pharmacy partners, nursing homes, states, and localities."
White House COVID-19 Response Coordinator Jeff Zients said vaccine supply is "in good shape for all Americans to get boosters as recommended."
Taking cues from Israel
In considering Pfizer’s original request, the committee overwhelmingly felt that they didn’t have enough information to say that the benefits of an additional dose of vaccine in 16- and 17-year-olds would outweigh its risk. Teens have the highest risk of rare heart inflammation after vaccination, a side effect known as myocarditis. It is not known how the vaccines are causing these cases of heart swelling. Most who have been diagnosed with the condition have recovered, though some have needed hospital care.
Pfizer didn’t include 16- and 17-year-olds in its studies of boosters, which included about 300 people between the ages of 18 and 55. The company acknowledged that gap in its data but pointed to FDA guidance that said evidence from adults could be extrapolated to teens.
“We don’t know that much about risks,” said committee member Eric Rubin, MD, who is editor-in-chief of the New England Journal of Medicine.
Much of the data on the potential benefits and harms of third Pfizer doses comes from Israel, which first began rolling out boosters to older adults in July.
In a highly anticipated presentation, Sharon Alroy-Preis, Israel’s director of public health services, joined the meeting to describe Israel’s experience with boosters.
Israel began to see a third surge of COVID-19 cases in December.
“This was after having two waves and two lockdowns,” Ms. Alroy-Preis said. By the third surge, she said, Israelis were tired.
“We decided on a lockdown, but the compliance of the public wasn’t as it was in the previous two waves,” she said.
Then the vaccine arrived. Israel started vaccinations as soon as the FDA approved it, and they quickly vaccinated a high percentage of their population, about 3 months faster than the rest of the world.
All vaccinations are reported and tracked by the Ministry of Health, so the country is able to keep close tabs on how well the shots are working.
As vaccines rolled out, cases fell dramatically. The pandemic seemed to be behind them. Delta arrived in March. By June, their cases were doubling every 10 days, despite about 80% of their most vulnerable adults being fully vaccinated, she said.
Most concerning was that about 60% of severe cases were breakthrough cases in fully vaccinated individuals.
“We had to stop and figure out, was this a Delta issue,” she said. “Or was this a waning immunity issue.”
“We had some clue that it might not be the Delta variant, at least not alone,” she said.
People who had originally been first in line for the vaccines, seniors and health care workers, were having the highest rates of breakthrough infections. People further away from their second dose were more likely to get a breakthrough infection.
Ms. Alroy-Preis said that if they had not started booster doses in July, their hospitals would have been overwhelmed. They had projected that they would have 2,000 cases in the hospital each day.
Boosters have helped to flatten the curve, though they are still seeing a significant number of infections.
Data from Israel presented at the meeting show boosters are largely safe and effective at reducing severe outcomes in seniors. Israeli experience also showed that third doses, which generate very high levels of neutralizing antibodies—the first and fastest line of the body’s immune defense - -may also slow transmission of the virus.
Key differences in the U.S.
The benefit of slowing down the explosive spread of a highly contagious virus was tantalizing, but many members noted that circumstances in Israel are very different than in the United States. Israel went into its current Delta surge already having high levels of vaccination in its population. They also relied on the Pfizer vaccine almost exclusively for their campaign.
The United States used a different mix of vaccines – Pfizer, Moderna, and Johnson & Johnson -- and doesn’t have the same high level of vaccination coverage of its population.
In the United States, transmission is mainly being driven by unvaccinated people, Dr. Rubin noted.
“That really means the primary benefit is going to be in reducing disease,” he said, “And we know the people who are going to benefit from that … and those are the kinds of people the FDA has already approved a third dose for,” he said, referring to those with underlying health conditions.
But Israel only began vaccinating younger people a few weeks ago. Most are still within a window where rare risks like myocarditis could appear, Rubin noted.
He and other members of the committee said they wished they had more information about the safety of third doses in younger adults.
“We don’t have that right now, and I don’t think I would be comfortable giving it to a 16-year-old,” he said.
At the same time, the primary benefit for third doses would be in preventing severe disease, and overall, data from the United States and other countries show that two doses of the vaccines remain highly effective at preventing hospitalization and death.
Asked why Israel began to see more severe cases in fully vaccinated people, the CDC’s Sara Oliver, MD, a disease detective with the CDC, said it was probably due to a mix of factors including the fact that Israel defines severe cases a little differently.
In the United States, a severe case is generally a person who has to be hospitalized or who has died from the infection. In Israel, a person with a severe case is someone who has an elevated respiratory rate and someone who has a blood oxygen level less than 94%. In the United States, that kind of patient wouldn’t necessarily be hospitalized.
In the end, one of the two committee members who wanted full approval for Pfizer’s third doses said he was satisfied with the outcome.
Mark Sawyer, MD, a professor of pediatrics and infectious disease at the University of California at San Diego, said he voted yes on the first question because he thought full approval was the best way to give doctors the flexibility to prescribe the shots to vulnerable individuals.
“I’m really glad we authorized a vaccine for a third dose, and I plan to go out and get my vaccine this afternoon,” Dr. Sawyer said, noting that he was at high risk as a health care provider.
This article was updated 9/19/21.
A version of this article first appeared on Medscape.com.
Pandemic goal deficiency disorder
In August I shared with you my observations on two opposing op-ed pieces from two major newspapers, one was in favor of masking mandates for public schools, the other against. (Masking in school: A battle of the op-eds. MDedge Pediatrics. Letters from Maine, 2021 Aug 12). Neither group of authors could offer us evidence from controlled studies to support their views. However, both agreed that returning children to school deserves a high priority. But neither the authors nor I treaded into the uncharted waters of exactly how masking fits into our national goals for managing the pandemic because ... no one in this country has articulated what these goals should be. A third op-ed appearing 3 weeks later suggests why we are floundering in this goal-deficient limbo.
Writing in the New York Times, two epidemiologists in Boston ask the simple question: “What are we actually trying to achieve in the United States?” when it comes to the pandemic. (Allen AG and Jenkins H. The Hard Covid-19 Questions We’re Not Asking. 2021 Aug 30). Is our goal zero infections? Is it hammering on the virus until we can treat it like the seasonal flu? We do seem to agree that not having kids in school has been a disaster economically, educationally, and psychologically. But, where does the goal of getting them back in school fit into a larger and as yet undefined national goal? Without that target we have little idea of what compromises and risks we should be willing to accept.
How much serious pediatric disease is acceptable? It appears that the number of fatal complications in the pediatric population is very small in comparison with other demographic groups. Although few in number, there have been and there will continue to be pediatric deaths because of COVID. Is our goal zero pediatric deaths? If it is then this dictates a level of response that ripples back upstream to every child in every classroom and could threaten our overarching goal of returning children to school. Because none of us likes the thought of a child dying, some of us may be hesitant to even consider a strategy that doesn’t include zero pediatric deaths as a goal.
Are we looking to have zero serious pediatric infections? Achieving this goal is unlikely. Even if we develop a pediatric vaccine in the near future it probably won’t be in the arms of enough children by the end of this school year to make a significant dent in the number of serious pediatric infections. Waiting until an optimal number of children are immunized doesn’t feel like it will achieve a primary goal of getting kids back in school if we continue to focus on driving the level of serious pediatric infections to zero. We have already endured a year in which many communities made decisions that seemed to have prioritized an unstated goal of no school exposure–related educator deaths. Again, a goal based on little if any evidence.
The problem we face in this country is that our response to the pandemic has been nonuniform. Here in Brunswick, Maine, 99% of the eligible adults have been vaccinated. Even with the recent surge, we may be ready for a strategy that avoids wholesale quarantining. A targeted and robust antibody testing system might work for us and make an unproven and unpopular masking mandate unnecessary. Britain seems to be moving in a similar direction to meet its goal of keeping children in school.
However, there are large population groups in regions of this country that have stumbled at taking the initial steps to get the pandemic under control. Articulating a national goal that covers both communities where the response to the pandemic has been less thoughtful and robust along with states that have been more successful is going to be difficult. But it must be done.
Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].
In August I shared with you my observations on two opposing op-ed pieces from two major newspapers, one was in favor of masking mandates for public schools, the other against. (Masking in school: A battle of the op-eds. MDedge Pediatrics. Letters from Maine, 2021 Aug 12). Neither group of authors could offer us evidence from controlled studies to support their views. However, both agreed that returning children to school deserves a high priority. But neither the authors nor I treaded into the uncharted waters of exactly how masking fits into our national goals for managing the pandemic because ... no one in this country has articulated what these goals should be. A third op-ed appearing 3 weeks later suggests why we are floundering in this goal-deficient limbo.
Writing in the New York Times, two epidemiologists in Boston ask the simple question: “What are we actually trying to achieve in the United States?” when it comes to the pandemic. (Allen AG and Jenkins H. The Hard Covid-19 Questions We’re Not Asking. 2021 Aug 30). Is our goal zero infections? Is it hammering on the virus until we can treat it like the seasonal flu? We do seem to agree that not having kids in school has been a disaster economically, educationally, and psychologically. But, where does the goal of getting them back in school fit into a larger and as yet undefined national goal? Without that target we have little idea of what compromises and risks we should be willing to accept.
How much serious pediatric disease is acceptable? It appears that the number of fatal complications in the pediatric population is very small in comparison with other demographic groups. Although few in number, there have been and there will continue to be pediatric deaths because of COVID. Is our goal zero pediatric deaths? If it is then this dictates a level of response that ripples back upstream to every child in every classroom and could threaten our overarching goal of returning children to school. Because none of us likes the thought of a child dying, some of us may be hesitant to even consider a strategy that doesn’t include zero pediatric deaths as a goal.
Are we looking to have zero serious pediatric infections? Achieving this goal is unlikely. Even if we develop a pediatric vaccine in the near future it probably won’t be in the arms of enough children by the end of this school year to make a significant dent in the number of serious pediatric infections. Waiting until an optimal number of children are immunized doesn’t feel like it will achieve a primary goal of getting kids back in school if we continue to focus on driving the level of serious pediatric infections to zero. We have already endured a year in which many communities made decisions that seemed to have prioritized an unstated goal of no school exposure–related educator deaths. Again, a goal based on little if any evidence.
The problem we face in this country is that our response to the pandemic has been nonuniform. Here in Brunswick, Maine, 99% of the eligible adults have been vaccinated. Even with the recent surge, we may be ready for a strategy that avoids wholesale quarantining. A targeted and robust antibody testing system might work for us and make an unproven and unpopular masking mandate unnecessary. Britain seems to be moving in a similar direction to meet its goal of keeping children in school.
However, there are large population groups in regions of this country that have stumbled at taking the initial steps to get the pandemic under control. Articulating a national goal that covers both communities where the response to the pandemic has been less thoughtful and robust along with states that have been more successful is going to be difficult. But it must be done.
Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].
In August I shared with you my observations on two opposing op-ed pieces from two major newspapers, one was in favor of masking mandates for public schools, the other against. (Masking in school: A battle of the op-eds. MDedge Pediatrics. Letters from Maine, 2021 Aug 12). Neither group of authors could offer us evidence from controlled studies to support their views. However, both agreed that returning children to school deserves a high priority. But neither the authors nor I treaded into the uncharted waters of exactly how masking fits into our national goals for managing the pandemic because ... no one in this country has articulated what these goals should be. A third op-ed appearing 3 weeks later suggests why we are floundering in this goal-deficient limbo.
Writing in the New York Times, two epidemiologists in Boston ask the simple question: “What are we actually trying to achieve in the United States?” when it comes to the pandemic. (Allen AG and Jenkins H. The Hard Covid-19 Questions We’re Not Asking. 2021 Aug 30). Is our goal zero infections? Is it hammering on the virus until we can treat it like the seasonal flu? We do seem to agree that not having kids in school has been a disaster economically, educationally, and psychologically. But, where does the goal of getting them back in school fit into a larger and as yet undefined national goal? Without that target we have little idea of what compromises and risks we should be willing to accept.
How much serious pediatric disease is acceptable? It appears that the number of fatal complications in the pediatric population is very small in comparison with other demographic groups. Although few in number, there have been and there will continue to be pediatric deaths because of COVID. Is our goal zero pediatric deaths? If it is then this dictates a level of response that ripples back upstream to every child in every classroom and could threaten our overarching goal of returning children to school. Because none of us likes the thought of a child dying, some of us may be hesitant to even consider a strategy that doesn’t include zero pediatric deaths as a goal.
Are we looking to have zero serious pediatric infections? Achieving this goal is unlikely. Even if we develop a pediatric vaccine in the near future it probably won’t be in the arms of enough children by the end of this school year to make a significant dent in the number of serious pediatric infections. Waiting until an optimal number of children are immunized doesn’t feel like it will achieve a primary goal of getting kids back in school if we continue to focus on driving the level of serious pediatric infections to zero. We have already endured a year in which many communities made decisions that seemed to have prioritized an unstated goal of no school exposure–related educator deaths. Again, a goal based on little if any evidence.
The problem we face in this country is that our response to the pandemic has been nonuniform. Here in Brunswick, Maine, 99% of the eligible adults have been vaccinated. Even with the recent surge, we may be ready for a strategy that avoids wholesale quarantining. A targeted and robust antibody testing system might work for us and make an unproven and unpopular masking mandate unnecessary. Britain seems to be moving in a similar direction to meet its goal of keeping children in school.
However, there are large population groups in regions of this country that have stumbled at taking the initial steps to get the pandemic under control. Articulating a national goal that covers both communities where the response to the pandemic has been less thoughtful and robust along with states that have been more successful is going to be difficult. But it must be done.
Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].
HPV infection during pregnancy ups risk of premature birth
Persistent human papillomavirus (HPV) 16 and HPV 18 during a pregnancy may be associated with an increased risk of premature birth.
Findings published online in JAMA Network Open found that 15.9% of individuals who had a persistent HPV 16 or 18 infection during the first and third trimesters of their pregnancy gave birth prematurely, compared with 5.6% of those who did not have an HPV infection at all.
The findings prompted the question of “the pathophysiology of HPV in pregnancy and how the virus is affecting the placenta,” said Lisette Davidson Tanner, MD, MPH, FACOG, who was not involved in the study.
Researchers said the findings are the first to show the association between preterm birth and HPV, which is an incurable virus that most sexually active individuals will get at some point in their lives, according to the Centers for Disease Control and Prevention.
“The results of this study are very important in helping us understand the burden caused by HPV in pregnancy,” study author Helen Trottier, MSc, PhD, researcher at the Centre Hospitalier Universitaire Sainte-Justine, said in an interview. “We may have just pinpointed an important cause of preterm birth that has so far been unexplained.”
Dr. Trottier and colleagues examined data from 1,052 pregnant women from three university-affiliated health care centers in Montreal between Nov. 8, 2010, and Oct. 16, 2016.
Only 5.6% of those who did not have an HPV infection had a premature birth, compared with 6.9% of those who tested positive for any HPV infection in the first trimester.
When looking at the first trimester, researchers found 12% of those diagnosed with HPV 16 and 18 had a preterm birth, compared to 4.9% of those who had a high-risk HPV infection other than HPV 16/18. When looking at the third trimester, researchers found that 15.9% of those with HPV 16/18 had an increased risk of giving birth prematurely, compared to those who had other high-risk HPV infections.
When researchers looked at the persistence of these HPV infections, they found that most HPV infections detected in the first trimester persist to the third trimester. The findings also revealed that persistent vaginal HPV 16/18 detection was significantly associated with all preterm births and spontaneous preterm births. This association was also found among those who had HPV infections detected in their placentas.
Meanwhile, 5.8% of those who had an HPV infection only during the first trimester experienced a preterm birth.
The researchers also found that HPV infections were frequent in pregnancy even among populations “considered to be at low risk based on sociodemographic and sexual history characteristics,” they wrote. Dr. Trottier said she hopes the findings will strengthen support for HPV vaccination.
Dr. Trottier’s study adds to a growing body of research regarding the adverse effects of HPV, according to Dr. Tanner, assistant professor of gynecology and obstetrics at Emory University, Atlanta. “It is already well known that HPV is associated with a number of anogenital and oropharyngeal cancers,” Dr. Tanner said in an interview. “The potential association with preterm birth only adds weight to the recommendations to screen for and prevent HPV infection.”
HPV 16 and 18 are high-risk types that cause about 70% of cervical cancers and precancerous cervical lesions, according to the World Health Organization. However, there are three HPV vaccines – 9-valent HPV vaccine (Gardasil), quadrivalent HPV vaccine (Gardasil®, 4vHPV), and bivalent HPV vaccine (Cervarix) – that help protect against HPV 16/18.
The findings strengthen the benefits of HPV vaccination, Dr. Trottier explained. “There is no cure when the HPV infection is present,” Dr. Trottier said. “If the link [between preterm birth and HPV infections] is indeed causal, we can expect a greater risk of preterm delivery in these women. The effective tool we have is the HPV vaccination, but it should ideally be received before the start of sexual activity in order to prevent future infections that could occur in women.”
The American College of Obstetricians and Gynecologists recommends HPV vaccination for girls and women between the ages of 11 and 26 years old. However, Dr. Tanner said, women aged 27-45 who were previously unvaccinated may still receive benefit from the vaccine.
“Despite the known efficacy of the vaccine, only 50% of patients are up to date with their HPV vaccination,” Dr. Tanner explained. “This study further highlights the need to educate and encourage patients to be vaccinated.”
The researchers said future studies should investigate the association of HPV vaccination and vaccination programs with the risk of preterm birth.
The experts disclosed no conflicts of interest.
Persistent human papillomavirus (HPV) 16 and HPV 18 during a pregnancy may be associated with an increased risk of premature birth.
Findings published online in JAMA Network Open found that 15.9% of individuals who had a persistent HPV 16 or 18 infection during the first and third trimesters of their pregnancy gave birth prematurely, compared with 5.6% of those who did not have an HPV infection at all.
The findings prompted the question of “the pathophysiology of HPV in pregnancy and how the virus is affecting the placenta,” said Lisette Davidson Tanner, MD, MPH, FACOG, who was not involved in the study.
Researchers said the findings are the first to show the association between preterm birth and HPV, which is an incurable virus that most sexually active individuals will get at some point in their lives, according to the Centers for Disease Control and Prevention.
“The results of this study are very important in helping us understand the burden caused by HPV in pregnancy,” study author Helen Trottier, MSc, PhD, researcher at the Centre Hospitalier Universitaire Sainte-Justine, said in an interview. “We may have just pinpointed an important cause of preterm birth that has so far been unexplained.”
Dr. Trottier and colleagues examined data from 1,052 pregnant women from three university-affiliated health care centers in Montreal between Nov. 8, 2010, and Oct. 16, 2016.
Only 5.6% of those who did not have an HPV infection had a premature birth, compared with 6.9% of those who tested positive for any HPV infection in the first trimester.
When looking at the first trimester, researchers found 12% of those diagnosed with HPV 16 and 18 had a preterm birth, compared to 4.9% of those who had a high-risk HPV infection other than HPV 16/18. When looking at the third trimester, researchers found that 15.9% of those with HPV 16/18 had an increased risk of giving birth prematurely, compared to those who had other high-risk HPV infections.
When researchers looked at the persistence of these HPV infections, they found that most HPV infections detected in the first trimester persist to the third trimester. The findings also revealed that persistent vaginal HPV 16/18 detection was significantly associated with all preterm births and spontaneous preterm births. This association was also found among those who had HPV infections detected in their placentas.
Meanwhile, 5.8% of those who had an HPV infection only during the first trimester experienced a preterm birth.
The researchers also found that HPV infections were frequent in pregnancy even among populations “considered to be at low risk based on sociodemographic and sexual history characteristics,” they wrote. Dr. Trottier said she hopes the findings will strengthen support for HPV vaccination.
Dr. Trottier’s study adds to a growing body of research regarding the adverse effects of HPV, according to Dr. Tanner, assistant professor of gynecology and obstetrics at Emory University, Atlanta. “It is already well known that HPV is associated with a number of anogenital and oropharyngeal cancers,” Dr. Tanner said in an interview. “The potential association with preterm birth only adds weight to the recommendations to screen for and prevent HPV infection.”
HPV 16 and 18 are high-risk types that cause about 70% of cervical cancers and precancerous cervical lesions, according to the World Health Organization. However, there are three HPV vaccines – 9-valent HPV vaccine (Gardasil), quadrivalent HPV vaccine (Gardasil®, 4vHPV), and bivalent HPV vaccine (Cervarix) – that help protect against HPV 16/18.
The findings strengthen the benefits of HPV vaccination, Dr. Trottier explained. “There is no cure when the HPV infection is present,” Dr. Trottier said. “If the link [between preterm birth and HPV infections] is indeed causal, we can expect a greater risk of preterm delivery in these women. The effective tool we have is the HPV vaccination, but it should ideally be received before the start of sexual activity in order to prevent future infections that could occur in women.”
The American College of Obstetricians and Gynecologists recommends HPV vaccination for girls and women between the ages of 11 and 26 years old. However, Dr. Tanner said, women aged 27-45 who were previously unvaccinated may still receive benefit from the vaccine.
“Despite the known efficacy of the vaccine, only 50% of patients are up to date with their HPV vaccination,” Dr. Tanner explained. “This study further highlights the need to educate and encourage patients to be vaccinated.”
The researchers said future studies should investigate the association of HPV vaccination and vaccination programs with the risk of preterm birth.
The experts disclosed no conflicts of interest.
Persistent human papillomavirus (HPV) 16 and HPV 18 during a pregnancy may be associated with an increased risk of premature birth.
Findings published online in JAMA Network Open found that 15.9% of individuals who had a persistent HPV 16 or 18 infection during the first and third trimesters of their pregnancy gave birth prematurely, compared with 5.6% of those who did not have an HPV infection at all.
The findings prompted the question of “the pathophysiology of HPV in pregnancy and how the virus is affecting the placenta,” said Lisette Davidson Tanner, MD, MPH, FACOG, who was not involved in the study.
Researchers said the findings are the first to show the association between preterm birth and HPV, which is an incurable virus that most sexually active individuals will get at some point in their lives, according to the Centers for Disease Control and Prevention.
“The results of this study are very important in helping us understand the burden caused by HPV in pregnancy,” study author Helen Trottier, MSc, PhD, researcher at the Centre Hospitalier Universitaire Sainte-Justine, said in an interview. “We may have just pinpointed an important cause of preterm birth that has so far been unexplained.”
Dr. Trottier and colleagues examined data from 1,052 pregnant women from three university-affiliated health care centers in Montreal between Nov. 8, 2010, and Oct. 16, 2016.
Only 5.6% of those who did not have an HPV infection had a premature birth, compared with 6.9% of those who tested positive for any HPV infection in the first trimester.
When looking at the first trimester, researchers found 12% of those diagnosed with HPV 16 and 18 had a preterm birth, compared to 4.9% of those who had a high-risk HPV infection other than HPV 16/18. When looking at the third trimester, researchers found that 15.9% of those with HPV 16/18 had an increased risk of giving birth prematurely, compared to those who had other high-risk HPV infections.
When researchers looked at the persistence of these HPV infections, they found that most HPV infections detected in the first trimester persist to the third trimester. The findings also revealed that persistent vaginal HPV 16/18 detection was significantly associated with all preterm births and spontaneous preterm births. This association was also found among those who had HPV infections detected in their placentas.
Meanwhile, 5.8% of those who had an HPV infection only during the first trimester experienced a preterm birth.
The researchers also found that HPV infections were frequent in pregnancy even among populations “considered to be at low risk based on sociodemographic and sexual history characteristics,” they wrote. Dr. Trottier said she hopes the findings will strengthen support for HPV vaccination.
Dr. Trottier’s study adds to a growing body of research regarding the adverse effects of HPV, according to Dr. Tanner, assistant professor of gynecology and obstetrics at Emory University, Atlanta. “It is already well known that HPV is associated with a number of anogenital and oropharyngeal cancers,” Dr. Tanner said in an interview. “The potential association with preterm birth only adds weight to the recommendations to screen for and prevent HPV infection.”
HPV 16 and 18 are high-risk types that cause about 70% of cervical cancers and precancerous cervical lesions, according to the World Health Organization. However, there are three HPV vaccines – 9-valent HPV vaccine (Gardasil), quadrivalent HPV vaccine (Gardasil®, 4vHPV), and bivalent HPV vaccine (Cervarix) – that help protect against HPV 16/18.
The findings strengthen the benefits of HPV vaccination, Dr. Trottier explained. “There is no cure when the HPV infection is present,” Dr. Trottier said. “If the link [between preterm birth and HPV infections] is indeed causal, we can expect a greater risk of preterm delivery in these women. The effective tool we have is the HPV vaccination, but it should ideally be received before the start of sexual activity in order to prevent future infections that could occur in women.”
The American College of Obstetricians and Gynecologists recommends HPV vaccination for girls and women between the ages of 11 and 26 years old. However, Dr. Tanner said, women aged 27-45 who were previously unvaccinated may still receive benefit from the vaccine.
“Despite the known efficacy of the vaccine, only 50% of patients are up to date with their HPV vaccination,” Dr. Tanner explained. “This study further highlights the need to educate and encourage patients to be vaccinated.”
The researchers said future studies should investigate the association of HPV vaccination and vaccination programs with the risk of preterm birth.
The experts disclosed no conflicts of interest.
FROM JAMA NETWORK OPEN