MDedge Infectious Disease

The continuing decline in COVID-19 incidence suggests the latest surge has peaked as new cases in children dropped for the 4th consecutive week, based on data from the American Academy of Pediatrics and the Children’s Hospital Association.

Preliminary data from the Centers for Disease Control and Prevention, however, show an uptick in new cases in late September, largely among younger children, that may indicate otherwise. Those data have a potential 2-week reporting delay, the CDC said on its COVID Data Tracker, so the most recent points on the graph (see above) could still go up.

The AAP and the CHA said that 173,000 new cases were reported for the week of Sept. 24-30, down 16% from the week before and 31% from the peak in early September. Those new cases made up almost 27% of all cases for the week, and the nearly 5.9 million child cases that have been reported since the start of the pandemic represent 16.2% of cases among Americans of all ages, the two groups said in their weekly COVID-19 report.

The CDC data on new cases by age group suggest that younger children have borne a heavier burden in the summer surge of COVID than they did last winter. The rate of new cases was not as high for 16- and 17-year-olds in the summer, but the other age groups all reached higher peaks than in the winter, including the 12- to 15-year-olds, who have been getting vaccinated since May, according to the COVID Data Tracker.

With vaccination approval getting closer for children under age 12 years, initiation in those already eligible continues to slide. Those aged 12-15 made up just 6.9% of new vaccinations during the 2 weeks from Sept. 21 to Oct. 4, and that figure has been dropping since July 13-26, when it was 14.1%. Vaccine initiation among 16- and 17-year-olds over that time has dropped by almost half, from 5.4% to 2.9%, the CDC data show.

All the vaccinations so far add up to this: Almost 55% of those aged 12-15 have gotten at least one dose of COVID vaccine, as have over 62% of those aged 16-17, and 52% of the older group is fully vaccinated, as is 44% of the younger group. Altogether, 10.8 million children were fully vaccinated as of Oct. 4, including those under 12 who may be participating in clinical trials or had a birth date entered incorrectly, the CDC said.

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The continuing decline in COVID-19 incidence suggests the latest surge has peaked as new cases in children dropped for the 4th consecutive week, based on data from the American Academy of Pediatrics and the Children’s Hospital Association.

Preliminary data from the Centers for Disease Control and Prevention, however, show an uptick in new cases in late September, largely among younger children, that may indicate otherwise. Those data have a potential 2-week reporting delay, the CDC said on its COVID Data Tracker, so the most recent points on the graph (see above) could still go up.

The AAP and the CHA said that 173,000 new cases were reported for the week of Sept. 24-30, down 16% from the week before and 31% from the peak in early September. Those new cases made up almost 27% of all cases for the week, and the nearly 5.9 million child cases that have been reported since the start of the pandemic represent 16.2% of cases among Americans of all ages, the two groups said in their weekly COVID-19 report.

The CDC data on new cases by age group suggest that younger children have borne a heavier burden in the summer surge of COVID than they did last winter. The rate of new cases was not as high for 16- and 17-year-olds in the summer, but the other age groups all reached higher peaks than in the winter, including the 12- to 15-year-olds, who have been getting vaccinated since May, according to the COVID Data Tracker.

With vaccination approval getting closer for children under age 12 years, initiation in those already eligible continues to slide. Those aged 12-15 made up just 6.9% of new vaccinations during the 2 weeks from Sept. 21 to Oct. 4, and that figure has been dropping since July 13-26, when it was 14.1%. Vaccine initiation among 16- and 17-year-olds over that time has dropped by almost half, from 5.4% to 2.9%, the CDC data show.

All the vaccinations so far add up to this: Almost 55% of those aged 12-15 have gotten at least one dose of COVID vaccine, as have over 62% of those aged 16-17, and 52% of the older group is fully vaccinated, as is 44% of the younger group. Altogether, 10.8 million children were fully vaccinated as of Oct. 4, including those under 12 who may be participating in clinical trials or had a birth date entered incorrectly, the CDC said.

[email protected]

The continuing decline in COVID-19 incidence suggests the latest surge has peaked as new cases in children dropped for the 4th consecutive week, based on data from the American Academy of Pediatrics and the Children’s Hospital Association.

Preliminary data from the Centers for Disease Control and Prevention, however, show an uptick in new cases in late September, largely among younger children, that may indicate otherwise. Those data have a potential 2-week reporting delay, the CDC said on its COVID Data Tracker, so the most recent points on the graph (see above) could still go up.

The AAP and the CHA said that 173,000 new cases were reported for the week of Sept. 24-30, down 16% from the week before and 31% from the peak in early September. Those new cases made up almost 27% of all cases for the week, and the nearly 5.9 million child cases that have been reported since the start of the pandemic represent 16.2% of cases among Americans of all ages, the two groups said in their weekly COVID-19 report.

The CDC data on new cases by age group suggest that younger children have borne a heavier burden in the summer surge of COVID than they did last winter. The rate of new cases was not as high for 16- and 17-year-olds in the summer, but the other age groups all reached higher peaks than in the winter, including the 12- to 15-year-olds, who have been getting vaccinated since May, according to the COVID Data Tracker.

With vaccination approval getting closer for children under age 12 years, initiation in those already eligible continues to slide. Those aged 12-15 made up just 6.9% of new vaccinations during the 2 weeks from Sept. 21 to Oct. 4, and that figure has been dropping since July 13-26, when it was 14.1%. Vaccine initiation among 16- and 17-year-olds over that time has dropped by almost half, from 5.4% to 2.9%, the CDC data show.

All the vaccinations so far add up to this: Almost 55% of those aged 12-15 have gotten at least one dose of COVID vaccine, as have over 62% of those aged 16-17, and 52% of the older group is fully vaccinated, as is 44% of the younger group. Altogether, 10.8 million children were fully vaccinated as of Oct. 4, including those under 12 who may be participating in clinical trials or had a birth date entered incorrectly, the CDC said.

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Johnson & Johnson asked the Food and Drug Administration (FDA) on Tuesday to authorize an extra dose of its COVID-19 vaccine as a booster shot.

The company said it filed a request for people ages 18 and older who have received the one-shot vaccine. Johnson & Johnson submitted data for several different booster intervals -- ranging from 2 months to 6 months -- but didn’t formally recommend one to the FDA, The Associated Press reported.

“We’re describing the data to them,” Mathai Mammen, MD, head of global research and development for Janssen, the company’s vaccine division, told CNN.

“The process is not that we asked for a very specific interval -- we’re providing them data and we’re going to be presenting to the committee,” he said. “They’ll take all that into consideration when they ultimately decide on an appropriate interval.”

The FDA’s independent vaccine advisory committee meets next week to review data on booster shots from both Johnson & Johnson and Moderna. It’s the first step in the review process, which then requires approval from leaders at the FDA and Centers for Disease Control and Prevention. If both agencies authorize the extra shots, Americans could receive boosters from Johnson & Johnson and Moderna later this month, the AP reported.

Johnson & Johnson previously released data that showed the vaccine remains highly effective against COVID-19 at least 5 months after vaccination, with 81% efficacy against hospitalizations in the United States.

Two weeks ago, the company reported that a booster dose at 2 months or 6 months further lifted immunity, with a booster at 2 months providing 94% protection against moderate and severe COVID-19. The company said the 6-month booster raised antibodies by 12 times but didn’t release additional data at that time.

In September, the FDA authorized booster shots of the Pfizer vaccine for ages 65 and older, those who live in long-term care facilities, and those with higher risks for contracting COVID-19. The Biden administration is supporting a booster campaign to address potential waning vaccine immunity and remaining surges of the more contagious Delta variant, the AP reported.

A version of this article first appeared on WebMD.com.

Johnson & Johnson asked the Food and Drug Administration (FDA) on Tuesday to authorize an extra dose of its COVID-19 vaccine as a booster shot.

The company said it filed a request for people ages 18 and older who have received the one-shot vaccine. Johnson & Johnson submitted data for several different booster intervals -- ranging from 2 months to 6 months -- but didn’t formally recommend one to the FDA, The Associated Press reported.

“We’re describing the data to them,” Mathai Mammen, MD, head of global research and development for Janssen, the company’s vaccine division, told CNN.

“The process is not that we asked for a very specific interval -- we’re providing them data and we’re going to be presenting to the committee,” he said. “They’ll take all that into consideration when they ultimately decide on an appropriate interval.”

The FDA’s independent vaccine advisory committee meets next week to review data on booster shots from both Johnson & Johnson and Moderna. It’s the first step in the review process, which then requires approval from leaders at the FDA and Centers for Disease Control and Prevention. If both agencies authorize the extra shots, Americans could receive boosters from Johnson & Johnson and Moderna later this month, the AP reported.

Johnson & Johnson previously released data that showed the vaccine remains highly effective against COVID-19 at least 5 months after vaccination, with 81% efficacy against hospitalizations in the United States.

Two weeks ago, the company reported that a booster dose at 2 months or 6 months further lifted immunity, with a booster at 2 months providing 94% protection against moderate and severe COVID-19. The company said the 6-month booster raised antibodies by 12 times but didn’t release additional data at that time.

In September, the FDA authorized booster shots of the Pfizer vaccine for ages 65 and older, those who live in long-term care facilities, and those with higher risks for contracting COVID-19. The Biden administration is supporting a booster campaign to address potential waning vaccine immunity and remaining surges of the more contagious Delta variant, the AP reported.

A version of this article first appeared on WebMD.com.

Johnson & Johnson asked the Food and Drug Administration (FDA) on Tuesday to authorize an extra dose of its COVID-19 vaccine as a booster shot.

The company said it filed a request for people ages 18 and older who have received the one-shot vaccine. Johnson & Johnson submitted data for several different booster intervals -- ranging from 2 months to 6 months -- but didn’t formally recommend one to the FDA, The Associated Press reported.

“We’re describing the data to them,” Mathai Mammen, MD, head of global research and development for Janssen, the company’s vaccine division, told CNN.

“The process is not that we asked for a very specific interval -- we’re providing them data and we’re going to be presenting to the committee,” he said. “They’ll take all that into consideration when they ultimately decide on an appropriate interval.”

The FDA’s independent vaccine advisory committee meets next week to review data on booster shots from both Johnson & Johnson and Moderna. It’s the first step in the review process, which then requires approval from leaders at the FDA and Centers for Disease Control and Prevention. If both agencies authorize the extra shots, Americans could receive boosters from Johnson & Johnson and Moderna later this month, the AP reported.

Johnson & Johnson previously released data that showed the vaccine remains highly effective against COVID-19 at least 5 months after vaccination, with 81% efficacy against hospitalizations in the United States.

Two weeks ago, the company reported that a booster dose at 2 months or 6 months further lifted immunity, with a booster at 2 months providing 94% protection against moderate and severe COVID-19. The company said the 6-month booster raised antibodies by 12 times but didn’t release additional data at that time.

In September, the FDA authorized booster shots of the Pfizer vaccine for ages 65 and older, those who live in long-term care facilities, and those with higher risks for contracting COVID-19. The Biden administration is supporting a booster campaign to address potential waning vaccine immunity and remaining surges of the more contagious Delta variant, the AP reported.

A version of this article first appeared on WebMD.com.

Houston architect Lanson Jones is one of the nearly 80 million Americans who refuse to get a COVID-19 vaccine, arguing the shots are experimental, were rushed to market, may cause side effects, and aren’t all fully approved by federal officials.

But when he contracted COVID in September, he didn’t hesitate to seek treatment with monoclonal antibodies -- a year-old, laboratory-created therapy no less experimental than the vaccines that is not fully approved by the FDA and can also cause rare side effects.

“I haven’t done the shot because I hear a lot -- a lot -- of information about what are some of the effects of these vaccines and how it’s really not being reported, and I just felt I didn’t want to put something in me that has some question,” says Mr. Jones, 65.

“But with this monoclonal antibody treatment, I didn’t hesitate. I had no doubt in my mind -- not even one ounce of doubt about it. Not one person said, ‘Oh, well some people have had a reaction to it.’”

Mr. Jones, who was treated at Houston Methodist Hospital, is one of more than a million Americans who have received antibody IVs after getting the virus.

Those numbers are growing, with the federal government recently taking over distribution of the supplies of the drugs, which are limited in many states.

The treatment has been effective against COVID, in helping patients recover, stay out of the hospital, or die from the illness.

But what doctors and public health experts say is most surprising is that so many of those embracing it are unvaccinated Americans who have refused the shot for reasons that could very well apply to the newly developed and experimental monoclonal antibody therapy, as well.

“I think it’s irrational, quite frankly, if you have to boil it down to one word,” says Howard Huang, MD, who heads up Houston Methodist’s infusion program, which is providing up to 900 doses a week. “It really doesn’t make any sense on multiple levels.”

For one thing, he says, the FDA has just granted full approval for the COVID vaccine produced by Pfizer and BioNTech, upgrading its status from its emergency use authorization (EUA). Many experts expect the FDA to grant similar full approvals to the Moderna vaccine and possibly the Johnson and Johnson shot, which currently have EUA designations.

Many vaccine holdouts have cited the EUA status of the COVID vaccines -- one step shy of full approval -- as a reason they don’t trust the shot. But the antibody treatments have also been granted only EUA approval, which hasn’t stopped vaccine-resistant Americans from seeking them.

“So, they’re refusing an FDA-approved and tested [vaccine], and then they’re seeking something that’s still under an FDA EUA,” says Dr. Huang. “I just don’t get it. I really don’t.”

Amesh Adalja, MD, an emerging infectious diseases specialist with the Johns Hopkins University Center for Health Security, calls it “paradoxical” thinking for vaccine holdouts to refuse a shot that boosts your natural antibodies to prevent COVID, but take an antibody drug to treat it after infection.

“I don’t understand it, I can’t,” he says. “But the pandemic has been politicized and … I think consistency is not something to expect from people who are thinking about this irrationally [and] for people engaging in these conspiracies about the vaccine.

“I do think the fact that people like Joe Rogan and Gov. Abbot and Donald Trump received the monoclonal antibodies does probably play a role in some of the thinking in some of these individuals.”

Terry Scoggin, CEO of Titus Regional Medical Center in Mount Pleasant, Tex., says even the hospital’s doctors have been shocked by the demand for the new therapy among unvaccinated Texans.

“It’s mind-blowing that there’s been such resistance to the vaccine, but that demand for the monoclonal antibodies is so high,” he says, noting only 47% of adults in the region have received at least one dose of the shot. That’s far below CDC estimates that say 75.2% of American adults have received one shot, while 64.7% are fully vaccinated.

“But our doctors believe in the monoclonal antibodies, so it’s a trust factor -- they trust our community physicians,” Mr. Scoggin says. “I’ve never put the two and two together about the fear of the vaccine vs. [lack of fear] of the treatment. But it’s really interesting.”
 

Treatments effective, costly

Like the COVID vaccines given to nearly 214 million Americans, the antibody treatments taken by more than 1 million in the United States are highly effective and cause only rare (and usually minor) side effects.

Federal health officials say the infusions have helped keep the U.S. death toll -- now about 2,000 per day-- from soaring even higher, even as vaccine hesitancy persists, particularly in Southern states.

The FDA first authorized monoclonal antibody drugs in November 2020 -- just weeks before the vaccines were approved. But their popularity has soared as the Delta variant of the virus that causes COVID-19 has surged in recent months.

Clinical trials show that the drugs can cut COVID-related hospitalization or death in high-risk patients by as much as 70%-80%. They also can prevent infection in healthy people who have been exposed to an infected person, according to research published this month in The New England Journal of Medicine.

Monoclonal antibodies have been used for decades to treat cancer, autoimmune disorders, and other diseases, with the FDA approving nearly 100 such treatments since 1994.

The FDA has granted EUA approvals to four antibody treatments for COVID-19.

A two-antibody drug combination from Regeneron -- containing casirivimab and imdevimab -- has been shown to reduce the risk of hospitalization and death by 70% in people infected with COVID. Sotrovimab, made by GlaxoSmithKline and Vir, has had similar results.

The FDA approved a third treatment -- Eli Lilly’s combination of bamlanivimab and etesevimab -- in 2020, but the agency recommended against its use earlier this year after it proved ineffective against the Delta variant. The combination came back on the market in late August, but only in states where fewer than 5% of COVID infections are from strains, such as Delta, that are resistant to the treatment.

In June, the FDA authorized a fourth drug combination, Genentech’s tocilizumab, for people already hospitalized with COVID. But it is only moderately effective against the disease.

Lab-made monoclonal antibodies mimic the antibodies the body makes to fight viruses and illnesses. They work by targeting the spike protein on the surface of the virus. COVID vaccines work by priming the body’s immune system to recognize this very same spike protein and block it from entering your body’s cells, preventing infection.

Antibody treatments are given as an IV to treat an infection but can also be given as shots into the belly for people who have been exposed to the virus but have not yet been sickened by it, Dr. Huang says.

Timing is critical, he says, noting antibodies are most effective when given in the first few days after symptoms emerge.
 

Demands, concerns on the rise

Orders for monoclonal antibodies have skyrocketed in recent weeks -- to 168,000 doses per week in late August, up from 27,000 in July. The Biden administration, which has been covering the cost of the treatment for most patients, took over its distribution as well this week.

But experts foresee potential problems as patient demand increases.

Federal officials have already warned states of potential shortages ahead. Only about 2.4 million monoclonal antibody doses have been shipped nationally so far, less than half of which have been administered.

More supplies are on the way, with the federal government recently buying another 1.8 million doses for delivery in the months ahead. But for now, some hospitals are uncertain of supplies and are already struggling to meet the demand for the treatments.

Seven Southern states account for 70% of orders: Texas, Alabama, Florida, Mississippi, Tennessee, Georgia, and Louisiana. Those states have among the nation’s lowest vaccine rates and highest infection numbers.

Florida officials said the state’s latest weekly allotment left clinics 41,000 doses short of what they need. Tennessee has begun limiting treatments for unvaccinated patients to give priority to those most at risk of dying from COVID. And in Texas, elective surgeries have been postponed to make room for COVID-19 patients at some hospitals, as operating room nurses have been enlisted to give IVs.

Some strong proponents of monoclonal antibody treatments have been frustrated by Republican governors who are scrambling to push and deliver them, while opposing vaccine and mask mandates.

Raising vaccination rates, scientists say, would make the antibody treatments unnecessary in many cases.

Experts also note the drugs are far more costly than the vaccines -- with a price tag of about $2,100 for each IV, compared to $20-$40 for the shot.

“When you’re talking about just the cost to society as a whole -- turning down a [vaccine] that costs a couple dozen dollars for therapies that cost thousands of dollars -- it just doesn’t make any sense,” says Dr. Huang.

“And the tragedy is that a lot of these infections right now are preventable. It’s not like the pre-vaccine days, when we didn’t have anything better. And for these people, it’s just hard to justify that line of thinking. And so, the challenge is changing people’s minds. And that’s really been the difficult thing.”

In addition, the treatments take 90 minutes to administer, taxing health care workers in hard-hit states that have been slammed by the influx of patients.

Beyond these issues, Dr. Huang cites other public health costs of people choosing treatment over vaccination. The vaccine protects others because it limits transmission of the virus. By contrast, a single antibody IV helps only that patient and does not keep people from infecting others or becoming reinfected, requiring another IV.

“Getting the vaccine helps people beyond yourself; it helps the community, too,” he notes. “There’s just a strong argument for getting the vaccine. I obviously have a very biased opinion, but I would hope I have more of a scientific or expert opinion, but that doesn’t seem to matter these days.”
 

Vaccine resistance still remains for some

Seth Thurman, an IT technician from Mount Pleasant, Tex., acknowledges he was hesitant to get the vaccine at first because he felt it was fast-tracked, “experimental,” might cause unknown side effects, was developed quickly, and was being pushed by government officials.

“I shared the same sentiments as a lot of other people [as] some of the reasons why I might have been hesitant in the beginning to get the vaccine, says Mr. Thurman, 47. “A lot of people don’t trust what’s out there, maybe what the government is pushing, so I was taking a wait-and-see approach.”

In August, he relented and received the first of the two-shot Moderna vaccine. But several weeks later, he developed COVID and took his doctor’s advice to receive antibody therapy at Titus Regional Medical Center.

The results were almost immediate.

“I noticed within just a few hours of getting that infusion I was feeling better,” he says. “And by the next day, I was feeling great. No more temperature and no cough and no loss of taste and smell. And today, I’m 100%.”

Having had COVID convinced him of the importance of getting the vaccine, and he plans to get the second dose of the shot after the prescribed 90-day waiting period.

But Mr. Jones, the Houston architect, remains unconvinced, even after suffering what he describes as a “horrible” experience with COVID.

“It’s something I’m still thinking about,” he says of the vaccine. “But I can’t imagine that there wouldn’t be some sort of side effects from something that was developed so fast and had not gone through 4 or 5 years of vetting or trials. So that kind of just leaves doubt in my mind.

“And it’s just so weird that something so personal has become so public -- like people’s medical decisions now are on the front page of The New York Times. When did we think something like that would ever happen?”

The quick results of his treatment were so “remarkable” that he’d recommend it to anyone without hesitation, he says.

“If my story can help people be willing to seek out this infusion and take it early on in their COVID experience, I think it would not only save lives and keep people out of our hospitals and not overwhelm our hospital systems,” he says.

Dr. Huang agrees that the IV therapy is a great “fallback option” for people who’ve been infected, who have weakened immune systems, or can’t receive the vaccine for other health reasons. But for most people, he argues, the vaccine is the best way to go. That’s why Houston Methodist advises the shot for every patient like Mr. Jones, who’s been treated for COVID.

“Getting the vaccine is the way to go for the vast number of people,” he says.

Frederick Thurmond, MD, who oversees COVID-related care at Titus Regional Medical Center, believes it will take more than just doctors’ recommendations to move some patients to get the vaccine. The only thing that will motivate some will be contracting COVID, or knowing someone who does, he says.

“It’s clear that at least here in Texas, I swear man, you tell people they need to do something, and they just say, ‘Well, then I’m NOT going to do it,’” he says. “But once you’ve got COVID, the game becomes a whole lot more serious. And I think most people in the U.S. know someone who’s died from COVID at this point.”

Dr. Thurmond says that for some patients, stubborn resistance to legitimate medical advice persists -- on the vaccine and even treatment -- even after infection.

“We have seen more than one person avoid any medical care whatsoever after they knew they had COVID,” he says. “They languish in private and eventually come to the emergency room extremely sick and doing things with little to no medical value -- such as taking a friend’s hydroxychloroquine, random antibiotics, a horse de-worming dose of ivermectin, and gargling with Betadine and even bleach.”

But most of his patients who have the IV therapy take his advice to get the vaccine afterward.

“The only way to end the pandemic is to vaccinate everybody,” he says.

Dr. Adalja agrees.

“The monoclonal antibodies work, they are great drugs, so I think it is appropriate to praise them,” says Dr. Adalja, who’s given them to his own patients. “But it’s not appropriate to use them as an alternative to vaccination or to think, you know, don’t worry about the getting the vaccine because if you get infected and get the monoclonal antibodies to get through this -- that’s not the way to approach it.

He also worries about what he calls “dark-age mentalities” that have fueled the anti-vaccine movement, which has sought to heighten fears of modern medicine and doctors.

“The anti-vaccine movement has really capitalized on COVID-19, and it’s really a much more virulent form of the anti-vaccine movement than what we’ve seen with measles and other diseases in the past,” he notes. “And I think it’s going to be very difficult to contend with in the future, because no one thought we’d be battling the anti-vaccine movement this late in the pandemic.”

The biggest takeaway?

“When it comes to an infectious disease, prevention is always much better than treatment,” Dr. Adalja says. “If you don’t even need to get to the treatment stage because you prevent people from getting infected, that’s the goal.”

A version of this article first appeared on WebMD.com.

Houston architect Lanson Jones is one of the nearly 80 million Americans who refuse to get a COVID-19 vaccine, arguing the shots are experimental, were rushed to market, may cause side effects, and aren’t all fully approved by federal officials.

But when he contracted COVID in September, he didn’t hesitate to seek treatment with monoclonal antibodies -- a year-old, laboratory-created therapy no less experimental than the vaccines that is not fully approved by the FDA and can also cause rare side effects.

“I haven’t done the shot because I hear a lot -- a lot -- of information about what are some of the effects of these vaccines and how it’s really not being reported, and I just felt I didn’t want to put something in me that has some question,” says Mr. Jones, 65.

“But with this monoclonal antibody treatment, I didn’t hesitate. I had no doubt in my mind -- not even one ounce of doubt about it. Not one person said, ‘Oh, well some people have had a reaction to it.’”

Mr. Jones, who was treated at Houston Methodist Hospital, is one of more than a million Americans who have received antibody IVs after getting the virus.

Those numbers are growing, with the federal government recently taking over distribution of the supplies of the drugs, which are limited in many states.

The treatment has been effective against COVID, in helping patients recover, stay out of the hospital, or die from the illness.

But what doctors and public health experts say is most surprising is that so many of those embracing it are unvaccinated Americans who have refused the shot for reasons that could very well apply to the newly developed and experimental monoclonal antibody therapy, as well.

“I think it’s irrational, quite frankly, if you have to boil it down to one word,” says Howard Huang, MD, who heads up Houston Methodist’s infusion program, which is providing up to 900 doses a week. “It really doesn’t make any sense on multiple levels.”

For one thing, he says, the FDA has just granted full approval for the COVID vaccine produced by Pfizer and BioNTech, upgrading its status from its emergency use authorization (EUA). Many experts expect the FDA to grant similar full approvals to the Moderna vaccine and possibly the Johnson and Johnson shot, which currently have EUA designations.

Many vaccine holdouts have cited the EUA status of the COVID vaccines -- one step shy of full approval -- as a reason they don’t trust the shot. But the antibody treatments have also been granted only EUA approval, which hasn’t stopped vaccine-resistant Americans from seeking them.

“So, they’re refusing an FDA-approved and tested [vaccine], and then they’re seeking something that’s still under an FDA EUA,” says Dr. Huang. “I just don’t get it. I really don’t.”

Amesh Adalja, MD, an emerging infectious diseases specialist with the Johns Hopkins University Center for Health Security, calls it “paradoxical” thinking for vaccine holdouts to refuse a shot that boosts your natural antibodies to prevent COVID, but take an antibody drug to treat it after infection.

“I don’t understand it, I can’t,” he says. “But the pandemic has been politicized and … I think consistency is not something to expect from people who are thinking about this irrationally [and] for people engaging in these conspiracies about the vaccine.

“I do think the fact that people like Joe Rogan and Gov. Abbot and Donald Trump received the monoclonal antibodies does probably play a role in some of the thinking in some of these individuals.”

Terry Scoggin, CEO of Titus Regional Medical Center in Mount Pleasant, Tex., says even the hospital’s doctors have been shocked by the demand for the new therapy among unvaccinated Texans.

“It’s mind-blowing that there’s been such resistance to the vaccine, but that demand for the monoclonal antibodies is so high,” he says, noting only 47% of adults in the region have received at least one dose of the shot. That’s far below CDC estimates that say 75.2% of American adults have received one shot, while 64.7% are fully vaccinated.

“But our doctors believe in the monoclonal antibodies, so it’s a trust factor -- they trust our community physicians,” Mr. Scoggin says. “I’ve never put the two and two together about the fear of the vaccine vs. [lack of fear] of the treatment. But it’s really interesting.”
 

Treatments effective, costly

Like the COVID vaccines given to nearly 214 million Americans, the antibody treatments taken by more than 1 million in the United States are highly effective and cause only rare (and usually minor) side effects.

Federal health officials say the infusions have helped keep the U.S. death toll -- now about 2,000 per day-- from soaring even higher, even as vaccine hesitancy persists, particularly in Southern states.

The FDA first authorized monoclonal antibody drugs in November 2020 -- just weeks before the vaccines were approved. But their popularity has soared as the Delta variant of the virus that causes COVID-19 has surged in recent months.

Clinical trials show that the drugs can cut COVID-related hospitalization or death in high-risk patients by as much as 70%-80%. They also can prevent infection in healthy people who have been exposed to an infected person, according to research published this month in The New England Journal of Medicine.

Monoclonal antibodies have been used for decades to treat cancer, autoimmune disorders, and other diseases, with the FDA approving nearly 100 such treatments since 1994.

The FDA has granted EUA approvals to four antibody treatments for COVID-19.

A two-antibody drug combination from Regeneron -- containing casirivimab and imdevimab -- has been shown to reduce the risk of hospitalization and death by 70% in people infected with COVID. Sotrovimab, made by GlaxoSmithKline and Vir, has had similar results.

The FDA approved a third treatment -- Eli Lilly’s combination of bamlanivimab and etesevimab -- in 2020, but the agency recommended against its use earlier this year after it proved ineffective against the Delta variant. The combination came back on the market in late August, but only in states where fewer than 5% of COVID infections are from strains, such as Delta, that are resistant to the treatment.

In June, the FDA authorized a fourth drug combination, Genentech’s tocilizumab, for people already hospitalized with COVID. But it is only moderately effective against the disease.

Lab-made monoclonal antibodies mimic the antibodies the body makes to fight viruses and illnesses. They work by targeting the spike protein on the surface of the virus. COVID vaccines work by priming the body’s immune system to recognize this very same spike protein and block it from entering your body’s cells, preventing infection.

Antibody treatments are given as an IV to treat an infection but can also be given as shots into the belly for people who have been exposed to the virus but have not yet been sickened by it, Dr. Huang says.

Timing is critical, he says, noting antibodies are most effective when given in the first few days after symptoms emerge.
 

Demands, concerns on the rise

Orders for monoclonal antibodies have skyrocketed in recent weeks -- to 168,000 doses per week in late August, up from 27,000 in July. The Biden administration, which has been covering the cost of the treatment for most patients, took over its distribution as well this week.

But experts foresee potential problems as patient demand increases.

Federal officials have already warned states of potential shortages ahead. Only about 2.4 million monoclonal antibody doses have been shipped nationally so far, less than half of which have been administered.

More supplies are on the way, with the federal government recently buying another 1.8 million doses for delivery in the months ahead. But for now, some hospitals are uncertain of supplies and are already struggling to meet the demand for the treatments.

Seven Southern states account for 70% of orders: Texas, Alabama, Florida, Mississippi, Tennessee, Georgia, and Louisiana. Those states have among the nation’s lowest vaccine rates and highest infection numbers.

Florida officials said the state’s latest weekly allotment left clinics 41,000 doses short of what they need. Tennessee has begun limiting treatments for unvaccinated patients to give priority to those most at risk of dying from COVID. And in Texas, elective surgeries have been postponed to make room for COVID-19 patients at some hospitals, as operating room nurses have been enlisted to give IVs.

Some strong proponents of monoclonal antibody treatments have been frustrated by Republican governors who are scrambling to push and deliver them, while opposing vaccine and mask mandates.

Raising vaccination rates, scientists say, would make the antibody treatments unnecessary in many cases.

Experts also note the drugs are far more costly than the vaccines -- with a price tag of about $2,100 for each IV, compared to $20-$40 for the shot.

“When you’re talking about just the cost to society as a whole -- turning down a [vaccine] that costs a couple dozen dollars for therapies that cost thousands of dollars -- it just doesn’t make any sense,” says Dr. Huang.

“And the tragedy is that a lot of these infections right now are preventable. It’s not like the pre-vaccine days, when we didn’t have anything better. And for these people, it’s just hard to justify that line of thinking. And so, the challenge is changing people’s minds. And that’s really been the difficult thing.”

In addition, the treatments take 90 minutes to administer, taxing health care workers in hard-hit states that have been slammed by the influx of patients.

Beyond these issues, Dr. Huang cites other public health costs of people choosing treatment over vaccination. The vaccine protects others because it limits transmission of the virus. By contrast, a single antibody IV helps only that patient and does not keep people from infecting others or becoming reinfected, requiring another IV.

“Getting the vaccine helps people beyond yourself; it helps the community, too,” he notes. “There’s just a strong argument for getting the vaccine. I obviously have a very biased opinion, but I would hope I have more of a scientific or expert opinion, but that doesn’t seem to matter these days.”
 

Vaccine resistance still remains for some

Seth Thurman, an IT technician from Mount Pleasant, Tex., acknowledges he was hesitant to get the vaccine at first because he felt it was fast-tracked, “experimental,” might cause unknown side effects, was developed quickly, and was being pushed by government officials.

“I shared the same sentiments as a lot of other people [as] some of the reasons why I might have been hesitant in the beginning to get the vaccine, says Mr. Thurman, 47. “A lot of people don’t trust what’s out there, maybe what the government is pushing, so I was taking a wait-and-see approach.”

In August, he relented and received the first of the two-shot Moderna vaccine. But several weeks later, he developed COVID and took his doctor’s advice to receive antibody therapy at Titus Regional Medical Center.

The results were almost immediate.

“I noticed within just a few hours of getting that infusion I was feeling better,” he says. “And by the next day, I was feeling great. No more temperature and no cough and no loss of taste and smell. And today, I’m 100%.”

Having had COVID convinced him of the importance of getting the vaccine, and he plans to get the second dose of the shot after the prescribed 90-day waiting period.

But Mr. Jones, the Houston architect, remains unconvinced, even after suffering what he describes as a “horrible” experience with COVID.

“It’s something I’m still thinking about,” he says of the vaccine. “But I can’t imagine that there wouldn’t be some sort of side effects from something that was developed so fast and had not gone through 4 or 5 years of vetting or trials. So that kind of just leaves doubt in my mind.

“And it’s just so weird that something so personal has become so public -- like people’s medical decisions now are on the front page of The New York Times. When did we think something like that would ever happen?”

The quick results of his treatment were so “remarkable” that he’d recommend it to anyone without hesitation, he says.

“If my story can help people be willing to seek out this infusion and take it early on in their COVID experience, I think it would not only save lives and keep people out of our hospitals and not overwhelm our hospital systems,” he says.

Dr. Huang agrees that the IV therapy is a great “fallback option” for people who’ve been infected, who have weakened immune systems, or can’t receive the vaccine for other health reasons. But for most people, he argues, the vaccine is the best way to go. That’s why Houston Methodist advises the shot for every patient like Mr. Jones, who’s been treated for COVID.

“Getting the vaccine is the way to go for the vast number of people,” he says.

Frederick Thurmond, MD, who oversees COVID-related care at Titus Regional Medical Center, believes it will take more than just doctors’ recommendations to move some patients to get the vaccine. The only thing that will motivate some will be contracting COVID, or knowing someone who does, he says.

“It’s clear that at least here in Texas, I swear man, you tell people they need to do something, and they just say, ‘Well, then I’m NOT going to do it,’” he says. “But once you’ve got COVID, the game becomes a whole lot more serious. And I think most people in the U.S. know someone who’s died from COVID at this point.”

Dr. Thurmond says that for some patients, stubborn resistance to legitimate medical advice persists -- on the vaccine and even treatment -- even after infection.

“We have seen more than one person avoid any medical care whatsoever after they knew they had COVID,” he says. “They languish in private and eventually come to the emergency room extremely sick and doing things with little to no medical value -- such as taking a friend’s hydroxychloroquine, random antibiotics, a horse de-worming dose of ivermectin, and gargling with Betadine and even bleach.”

But most of his patients who have the IV therapy take his advice to get the vaccine afterward.

“The only way to end the pandemic is to vaccinate everybody,” he says.

Dr. Adalja agrees.

“The monoclonal antibodies work, they are great drugs, so I think it is appropriate to praise them,” says Dr. Adalja, who’s given them to his own patients. “But it’s not appropriate to use them as an alternative to vaccination or to think, you know, don’t worry about the getting the vaccine because if you get infected and get the monoclonal antibodies to get through this -- that’s not the way to approach it.

He also worries about what he calls “dark-age mentalities” that have fueled the anti-vaccine movement, which has sought to heighten fears of modern medicine and doctors.

“The anti-vaccine movement has really capitalized on COVID-19, and it’s really a much more virulent form of the anti-vaccine movement than what we’ve seen with measles and other diseases in the past,” he notes. “And I think it’s going to be very difficult to contend with in the future, because no one thought we’d be battling the anti-vaccine movement this late in the pandemic.”

The biggest takeaway?

“When it comes to an infectious disease, prevention is always much better than treatment,” Dr. Adalja says. “If you don’t even need to get to the treatment stage because you prevent people from getting infected, that’s the goal.”

A version of this article first appeared on WebMD.com.

Houston architect Lanson Jones is one of the nearly 80 million Americans who refuse to get a COVID-19 vaccine, arguing the shots are experimental, were rushed to market, may cause side effects, and aren’t all fully approved by federal officials.

But when he contracted COVID in September, he didn’t hesitate to seek treatment with monoclonal antibodies -- a year-old, laboratory-created therapy no less experimental than the vaccines that is not fully approved by the FDA and can also cause rare side effects.

“I haven’t done the shot because I hear a lot -- a lot -- of information about what are some of the effects of these vaccines and how it’s really not being reported, and I just felt I didn’t want to put something in me that has some question,” says Mr. Jones, 65.

“But with this monoclonal antibody treatment, I didn’t hesitate. I had no doubt in my mind -- not even one ounce of doubt about it. Not one person said, ‘Oh, well some people have had a reaction to it.’”

Mr. Jones, who was treated at Houston Methodist Hospital, is one of more than a million Americans who have received antibody IVs after getting the virus.

Those numbers are growing, with the federal government recently taking over distribution of the supplies of the drugs, which are limited in many states.

The treatment has been effective against COVID, in helping patients recover, stay out of the hospital, or die from the illness.

But what doctors and public health experts say is most surprising is that so many of those embracing it are unvaccinated Americans who have refused the shot for reasons that could very well apply to the newly developed and experimental monoclonal antibody therapy, as well.

“I think it’s irrational, quite frankly, if you have to boil it down to one word,” says Howard Huang, MD, who heads up Houston Methodist’s infusion program, which is providing up to 900 doses a week. “It really doesn’t make any sense on multiple levels.”

For one thing, he says, the FDA has just granted full approval for the COVID vaccine produced by Pfizer and BioNTech, upgrading its status from its emergency use authorization (EUA). Many experts expect the FDA to grant similar full approvals to the Moderna vaccine and possibly the Johnson and Johnson shot, which currently have EUA designations.

Many vaccine holdouts have cited the EUA status of the COVID vaccines -- one step shy of full approval -- as a reason they don’t trust the shot. But the antibody treatments have also been granted only EUA approval, which hasn’t stopped vaccine-resistant Americans from seeking them.

“So, they’re refusing an FDA-approved and tested [vaccine], and then they’re seeking something that’s still under an FDA EUA,” says Dr. Huang. “I just don’t get it. I really don’t.”

Amesh Adalja, MD, an emerging infectious diseases specialist with the Johns Hopkins University Center for Health Security, calls it “paradoxical” thinking for vaccine holdouts to refuse a shot that boosts your natural antibodies to prevent COVID, but take an antibody drug to treat it after infection.

“I don’t understand it, I can’t,” he says. “But the pandemic has been politicized and … I think consistency is not something to expect from people who are thinking about this irrationally [and] for people engaging in these conspiracies about the vaccine.

“I do think the fact that people like Joe Rogan and Gov. Abbot and Donald Trump received the monoclonal antibodies does probably play a role in some of the thinking in some of these individuals.”

Terry Scoggin, CEO of Titus Regional Medical Center in Mount Pleasant, Tex., says even the hospital’s doctors have been shocked by the demand for the new therapy among unvaccinated Texans.

“It’s mind-blowing that there’s been such resistance to the vaccine, but that demand for the monoclonal antibodies is so high,” he says, noting only 47% of adults in the region have received at least one dose of the shot. That’s far below CDC estimates that say 75.2% of American adults have received one shot, while 64.7% are fully vaccinated.

“But our doctors believe in the monoclonal antibodies, so it’s a trust factor -- they trust our community physicians,” Mr. Scoggin says. “I’ve never put the two and two together about the fear of the vaccine vs. [lack of fear] of the treatment. But it’s really interesting.”
 

Treatments effective, costly

Like the COVID vaccines given to nearly 214 million Americans, the antibody treatments taken by more than 1 million in the United States are highly effective and cause only rare (and usually minor) side effects.

Federal health officials say the infusions have helped keep the U.S. death toll -- now about 2,000 per day-- from soaring even higher, even as vaccine hesitancy persists, particularly in Southern states.

The FDA first authorized monoclonal antibody drugs in November 2020 -- just weeks before the vaccines were approved. But their popularity has soared as the Delta variant of the virus that causes COVID-19 has surged in recent months.

Clinical trials show that the drugs can cut COVID-related hospitalization or death in high-risk patients by as much as 70%-80%. They also can prevent infection in healthy people who have been exposed to an infected person, according to research published this month in The New England Journal of Medicine.

Monoclonal antibodies have been used for decades to treat cancer, autoimmune disorders, and other diseases, with the FDA approving nearly 100 such treatments since 1994.

The FDA has granted EUA approvals to four antibody treatments for COVID-19.

A two-antibody drug combination from Regeneron -- containing casirivimab and imdevimab -- has been shown to reduce the risk of hospitalization and death by 70% in people infected with COVID. Sotrovimab, made by GlaxoSmithKline and Vir, has had similar results.

The FDA approved a third treatment -- Eli Lilly’s combination of bamlanivimab and etesevimab -- in 2020, but the agency recommended against its use earlier this year after it proved ineffective against the Delta variant. The combination came back on the market in late August, but only in states where fewer than 5% of COVID infections are from strains, such as Delta, that are resistant to the treatment.

In June, the FDA authorized a fourth drug combination, Genentech’s tocilizumab, for people already hospitalized with COVID. But it is only moderately effective against the disease.

Lab-made monoclonal antibodies mimic the antibodies the body makes to fight viruses and illnesses. They work by targeting the spike protein on the surface of the virus. COVID vaccines work by priming the body’s immune system to recognize this very same spike protein and block it from entering your body’s cells, preventing infection.

Antibody treatments are given as an IV to treat an infection but can also be given as shots into the belly for people who have been exposed to the virus but have not yet been sickened by it, Dr. Huang says.

Timing is critical, he says, noting antibodies are most effective when given in the first few days after symptoms emerge.
 

Demands, concerns on the rise

Orders for monoclonal antibodies have skyrocketed in recent weeks -- to 168,000 doses per week in late August, up from 27,000 in July. The Biden administration, which has been covering the cost of the treatment for most patients, took over its distribution as well this week.

But experts foresee potential problems as patient demand increases.

Federal officials have already warned states of potential shortages ahead. Only about 2.4 million monoclonal antibody doses have been shipped nationally so far, less than half of which have been administered.

More supplies are on the way, with the federal government recently buying another 1.8 million doses for delivery in the months ahead. But for now, some hospitals are uncertain of supplies and are already struggling to meet the demand for the treatments.

Seven Southern states account for 70% of orders: Texas, Alabama, Florida, Mississippi, Tennessee, Georgia, and Louisiana. Those states have among the nation’s lowest vaccine rates and highest infection numbers.

Florida officials said the state’s latest weekly allotment left clinics 41,000 doses short of what they need. Tennessee has begun limiting treatments for unvaccinated patients to give priority to those most at risk of dying from COVID. And in Texas, elective surgeries have been postponed to make room for COVID-19 patients at some hospitals, as operating room nurses have been enlisted to give IVs.

Some strong proponents of monoclonal antibody treatments have been frustrated by Republican governors who are scrambling to push and deliver them, while opposing vaccine and mask mandates.

Raising vaccination rates, scientists say, would make the antibody treatments unnecessary in many cases.

Experts also note the drugs are far more costly than the vaccines -- with a price tag of about $2,100 for each IV, compared to $20-$40 for the shot.

“When you’re talking about just the cost to society as a whole -- turning down a [vaccine] that costs a couple dozen dollars for therapies that cost thousands of dollars -- it just doesn’t make any sense,” says Dr. Huang.

“And the tragedy is that a lot of these infections right now are preventable. It’s not like the pre-vaccine days, when we didn’t have anything better. And for these people, it’s just hard to justify that line of thinking. And so, the challenge is changing people’s minds. And that’s really been the difficult thing.”

In addition, the treatments take 90 minutes to administer, taxing health care workers in hard-hit states that have been slammed by the influx of patients.

Beyond these issues, Dr. Huang cites other public health costs of people choosing treatment over vaccination. The vaccine protects others because it limits transmission of the virus. By contrast, a single antibody IV helps only that patient and does not keep people from infecting others or becoming reinfected, requiring another IV.

“Getting the vaccine helps people beyond yourself; it helps the community, too,” he notes. “There’s just a strong argument for getting the vaccine. I obviously have a very biased opinion, but I would hope I have more of a scientific or expert opinion, but that doesn’t seem to matter these days.”
 

Vaccine resistance still remains for some

Seth Thurman, an IT technician from Mount Pleasant, Tex., acknowledges he was hesitant to get the vaccine at first because he felt it was fast-tracked, “experimental,” might cause unknown side effects, was developed quickly, and was being pushed by government officials.

“I shared the same sentiments as a lot of other people [as] some of the reasons why I might have been hesitant in the beginning to get the vaccine, says Mr. Thurman, 47. “A lot of people don’t trust what’s out there, maybe what the government is pushing, so I was taking a wait-and-see approach.”

In August, he relented and received the first of the two-shot Moderna vaccine. But several weeks later, he developed COVID and took his doctor’s advice to receive antibody therapy at Titus Regional Medical Center.

The results were almost immediate.

“I noticed within just a few hours of getting that infusion I was feeling better,” he says. “And by the next day, I was feeling great. No more temperature and no cough and no loss of taste and smell. And today, I’m 100%.”

Having had COVID convinced him of the importance of getting the vaccine, and he plans to get the second dose of the shot after the prescribed 90-day waiting period.

But Mr. Jones, the Houston architect, remains unconvinced, even after suffering what he describes as a “horrible” experience with COVID.

“It’s something I’m still thinking about,” he says of the vaccine. “But I can’t imagine that there wouldn’t be some sort of side effects from something that was developed so fast and had not gone through 4 or 5 years of vetting or trials. So that kind of just leaves doubt in my mind.

“And it’s just so weird that something so personal has become so public -- like people’s medical decisions now are on the front page of The New York Times. When did we think something like that would ever happen?”

The quick results of his treatment were so “remarkable” that he’d recommend it to anyone without hesitation, he says.

“If my story can help people be willing to seek out this infusion and take it early on in their COVID experience, I think it would not only save lives and keep people out of our hospitals and not overwhelm our hospital systems,” he says.

Dr. Huang agrees that the IV therapy is a great “fallback option” for people who’ve been infected, who have weakened immune systems, or can’t receive the vaccine for other health reasons. But for most people, he argues, the vaccine is the best way to go. That’s why Houston Methodist advises the shot for every patient like Mr. Jones, who’s been treated for COVID.

“Getting the vaccine is the way to go for the vast number of people,” he says.

Frederick Thurmond, MD, who oversees COVID-related care at Titus Regional Medical Center, believes it will take more than just doctors’ recommendations to move some patients to get the vaccine. The only thing that will motivate some will be contracting COVID, or knowing someone who does, he says.

“It’s clear that at least here in Texas, I swear man, you tell people they need to do something, and they just say, ‘Well, then I’m NOT going to do it,’” he says. “But once you’ve got COVID, the game becomes a whole lot more serious. And I think most people in the U.S. know someone who’s died from COVID at this point.”

Dr. Thurmond says that for some patients, stubborn resistance to legitimate medical advice persists -- on the vaccine and even treatment -- even after infection.

“We have seen more than one person avoid any medical care whatsoever after they knew they had COVID,” he says. “They languish in private and eventually come to the emergency room extremely sick and doing things with little to no medical value -- such as taking a friend’s hydroxychloroquine, random antibiotics, a horse de-worming dose of ivermectin, and gargling with Betadine and even bleach.”

But most of his patients who have the IV therapy take his advice to get the vaccine afterward.

“The only way to end the pandemic is to vaccinate everybody,” he says.

Dr. Adalja agrees.

“The monoclonal antibodies work, they are great drugs, so I think it is appropriate to praise them,” says Dr. Adalja, who’s given them to his own patients. “But it’s not appropriate to use them as an alternative to vaccination or to think, you know, don’t worry about the getting the vaccine because if you get infected and get the monoclonal antibodies to get through this -- that’s not the way to approach it.

He also worries about what he calls “dark-age mentalities” that have fueled the anti-vaccine movement, which has sought to heighten fears of modern medicine and doctors.

“The anti-vaccine movement has really capitalized on COVID-19, and it’s really a much more virulent form of the anti-vaccine movement than what we’ve seen with measles and other diseases in the past,” he notes. “And I think it’s going to be very difficult to contend with in the future, because no one thought we’d be battling the anti-vaccine movement this late in the pandemic.”

The biggest takeaway?

“When it comes to an infectious disease, prevention is always much better than treatment,” Dr. Adalja says. “If you don’t even need to get to the treatment stage because you prevent people from getting infected, that’s the goal.”

A version of this article first appeared on WebMD.com.

Antibody levels may wane after 7 months for people who got the Pfizer-BioNTech vaccine, according to a new study published on the bioRxiv preprint server.

In the study, which hasn’t yet been peer-reviewed or formally published in a medical journal, researchers analyzed blood samples from 46 healthy young or middle-aged adults after receiving two doses, and then 6 months after the second dose.

“Our study shows vaccination with the Pfizer-BioNTech vaccine induces high levels of neutralizing antibodies against the original vaccine strain, but these levels drop by nearly 10-fold by 7 months,” the researchers told Reuters.

In about half of the adults, neutralizing antibodies were undetectable at 6 months after the second dose, particularly against coronavirus variants such as Delta, Beta, and Mu.

Neutralizing antibodies only make up part of the body’s immune defense against the virus, Reuters noted, but they are still “critically important” in protecting against coronavirus infections.

“These findings suggest that administering a booster dose at around 6 to 7 months following the initial immunization will likely enhance protection,” the study authors wrote.

BioNTech said a new vaccine formula will likely be needed by mid-2022 to protect against future mutations of the virus, according to the Financial Times.

“This year, [a different vaccine] is completely unneeded, but by mid-next year, it could be a different situation,” Ugur Sahin, MD, cofounder and CEO of BioNTech, told the news outlet.

Current variants, namely the Delta variant, are more contagious than the original coronavirus strain but not different enough to evade current vaccines, he said. But new strains may be able to evade boosters.

“This virus will stay, and the virus will further adapt,” Dr. Sahin said. “This is a continuous evolution, and that evolution has just started.”

A version of this article first appeared on WebMD.com.

Antibody levels may wane after 7 months for people who got the Pfizer-BioNTech vaccine, according to a new study published on the bioRxiv preprint server.

In the study, which hasn’t yet been peer-reviewed or formally published in a medical journal, researchers analyzed blood samples from 46 healthy young or middle-aged adults after receiving two doses, and then 6 months after the second dose.

“Our study shows vaccination with the Pfizer-BioNTech vaccine induces high levels of neutralizing antibodies against the original vaccine strain, but these levels drop by nearly 10-fold by 7 months,” the researchers told Reuters.

In about half of the adults, neutralizing antibodies were undetectable at 6 months after the second dose, particularly against coronavirus variants such as Delta, Beta, and Mu.

Neutralizing antibodies only make up part of the body’s immune defense against the virus, Reuters noted, but they are still “critically important” in protecting against coronavirus infections.

“These findings suggest that administering a booster dose at around 6 to 7 months following the initial immunization will likely enhance protection,” the study authors wrote.

BioNTech said a new vaccine formula will likely be needed by mid-2022 to protect against future mutations of the virus, according to the Financial Times.

“This year, [a different vaccine] is completely unneeded, but by mid-next year, it could be a different situation,” Ugur Sahin, MD, cofounder and CEO of BioNTech, told the news outlet.

Current variants, namely the Delta variant, are more contagious than the original coronavirus strain but not different enough to evade current vaccines, he said. But new strains may be able to evade boosters.

“This virus will stay, and the virus will further adapt,” Dr. Sahin said. “This is a continuous evolution, and that evolution has just started.”

A version of this article first appeared on WebMD.com.

Antibody levels may wane after 7 months for people who got the Pfizer-BioNTech vaccine, according to a new study published on the bioRxiv preprint server.

In the study, which hasn’t yet been peer-reviewed or formally published in a medical journal, researchers analyzed blood samples from 46 healthy young or middle-aged adults after receiving two doses, and then 6 months after the second dose.

“Our study shows vaccination with the Pfizer-BioNTech vaccine induces high levels of neutralizing antibodies against the original vaccine strain, but these levels drop by nearly 10-fold by 7 months,” the researchers told Reuters.

In about half of the adults, neutralizing antibodies were undetectable at 6 months after the second dose, particularly against coronavirus variants such as Delta, Beta, and Mu.

Neutralizing antibodies only make up part of the body’s immune defense against the virus, Reuters noted, but they are still “critically important” in protecting against coronavirus infections.

“These findings suggest that administering a booster dose at around 6 to 7 months following the initial immunization will likely enhance protection,” the study authors wrote.

BioNTech said a new vaccine formula will likely be needed by mid-2022 to protect against future mutations of the virus, according to the Financial Times.

“This year, [a different vaccine] is completely unneeded, but by mid-next year, it could be a different situation,” Ugur Sahin, MD, cofounder and CEO of BioNTech, told the news outlet.

Current variants, namely the Delta variant, are more contagious than the original coronavirus strain but not different enough to evade current vaccines, he said. But new strains may be able to evade boosters.

“This virus will stay, and the virus will further adapt,” Dr. Sahin said. “This is a continuous evolution, and that evolution has just started.”

A version of this article first appeared on WebMD.com.

A one-time dose of two long-acting monoclonal antibodies reduced the risk of developing symptomatic COVID by 77% in comparison with placebo (P < .001) in a randomized, double-blind, placebo-controlled, phase 3 trial in adults, according to researchers who presented results at IDWeek 2021, an annual scientific meeting on infectious diseases.

The mix of tixagevimab and cilgavimab (AZD7442, Astra Zeneca) in a 300-mg dose is delivered in two intramuscular injections.

“This is the first long-acting combination of monoclonal antibodies that represents a potential new option to augment COVID-19 prevention,” said lead author Myron J. Levin, MD, a professor and pediatric infectious disease specialist at the University of Colorado at Denver, Aurora, who presented the findings of the PROVENT trial.

Both antibodies were taken from B cells donated by patients who had been infected with SARS-CoV-2, and they work synergistically, Dr. Levin said.

“The combination of them is better than adding results of each individually,” he said. “In vitro experiments have already shown that variants of interest and concern, including the Delta variant, are successfully neutralized by this cocktail.”

The trial was conducted in 87 sites in the United States, the United Kingdom, Spain, France, and Belgium. Participants included 5,197 unvaccinated adults who had never been infected with SARS-CoV-2 and either were at higher risk for inadequate response to COVID-19 vaccines because they were immunocompromised or were at high risk for exposure.

“Efficacy was observed through at least 3 months,” Dr. Levin said. “Preliminary pharmacokinetic modeling predicts potential protection for up to 12 months.”

Raymund Razonable, MD, an infectious disease expert with the Mayo Clinic in Rochester, Minn., who was not involved with the trial, told this news organization he was particularly interested in this combination because the developers made use of novel technology that extends the half-life of the antibodies and because of the large number of participants in the study.

Modeling that shows protection could last up to a year is novel and important, he said.

“People won’t need frequent injections,” Dr. Razonable said. With postexposure prophylaxis monoclonal cocktails, people may be given a dose a month, he noted.

Dr. Razonable said, “This is something intended to prevent COVID in people who are unvaccinated. The downside to that is we want people to get vaccinated. The best strategy so far is really vaccination.”

He said AZD7442 could potentially help fill the void for patients who are not able to respond to the COVID vaccines, including some who are immunocompromised or are undergoing chemotherapy.

Dr. Razonable said that, although the 77% reduction for developing symptomatic COVID-19 (95% confidence interval vs. placebo, 46.0-90.0; P < .001) is impressive, it is a reduction in relative risk. Still unknown is how much an individual’s absolute risk is reduced.

He also said it would be helpful to know how many people in the study population were immunocompromised, “because I think that’s where this product will be useful for prevention.”

The primary study endpoints were the first case of SARS-CoV-2 RT-PCR-positive symptomatic illness post dose and prior to day 183 (efficacy) as well as the safety of the product.

The cocktail appeared to be well tolerated. Adverse events occurred in 35% of participants administered AZD7442 and in 34% of the placebo group. Injection-site reactions occurred in 2.4% of the AZD7442 group and in 2.1% of the placebo group. There was one case of severe or critical COVID-19; two COVID-19–related deaths occurred in the placebo group.

AZD7442 is being developed with the help of funding from the U.S. government. Dr. Levin has received support from GlaxoSmithKline companies. Many of the coauthors are employed by AstraZeneca and hold stock in the company. Dr. Razonable has disclosed no relevant financial relationships.

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

A one-time dose of two long-acting monoclonal antibodies reduced the risk of developing symptomatic COVID by 77% in comparison with placebo (P < .001) in a randomized, double-blind, placebo-controlled, phase 3 trial in adults, according to researchers who presented results at IDWeek 2021, an annual scientific meeting on infectious diseases.

The mix of tixagevimab and cilgavimab (AZD7442, Astra Zeneca) in a 300-mg dose is delivered in two intramuscular injections.

“This is the first long-acting combination of monoclonal antibodies that represents a potential new option to augment COVID-19 prevention,” said lead author Myron J. Levin, MD, a professor and pediatric infectious disease specialist at the University of Colorado at Denver, Aurora, who presented the findings of the PROVENT trial.

Both antibodies were taken from B cells donated by patients who had been infected with SARS-CoV-2, and they work synergistically, Dr. Levin said.

“The combination of them is better than adding results of each individually,” he said. “In vitro experiments have already shown that variants of interest and concern, including the Delta variant, are successfully neutralized by this cocktail.”

The trial was conducted in 87 sites in the United States, the United Kingdom, Spain, France, and Belgium. Participants included 5,197 unvaccinated adults who had never been infected with SARS-CoV-2 and either were at higher risk for inadequate response to COVID-19 vaccines because they were immunocompromised or were at high risk for exposure.

“Efficacy was observed through at least 3 months,” Dr. Levin said. “Preliminary pharmacokinetic modeling predicts potential protection for up to 12 months.”

Raymund Razonable, MD, an infectious disease expert with the Mayo Clinic in Rochester, Minn., who was not involved with the trial, told this news organization he was particularly interested in this combination because the developers made use of novel technology that extends the half-life of the antibodies and because of the large number of participants in the study.

Modeling that shows protection could last up to a year is novel and important, he said.

“People won’t need frequent injections,” Dr. Razonable said. With postexposure prophylaxis monoclonal cocktails, people may be given a dose a month, he noted.

Dr. Razonable said, “This is something intended to prevent COVID in people who are unvaccinated. The downside to that is we want people to get vaccinated. The best strategy so far is really vaccination.”

He said AZD7442 could potentially help fill the void for patients who are not able to respond to the COVID vaccines, including some who are immunocompromised or are undergoing chemotherapy.

Dr. Razonable said that, although the 77% reduction for developing symptomatic COVID-19 (95% confidence interval vs. placebo, 46.0-90.0; P < .001) is impressive, it is a reduction in relative risk. Still unknown is how much an individual’s absolute risk is reduced.

He also said it would be helpful to know how many people in the study population were immunocompromised, “because I think that’s where this product will be useful for prevention.”

The primary study endpoints were the first case of SARS-CoV-2 RT-PCR-positive symptomatic illness post dose and prior to day 183 (efficacy) as well as the safety of the product.

The cocktail appeared to be well tolerated. Adverse events occurred in 35% of participants administered AZD7442 and in 34% of the placebo group. Injection-site reactions occurred in 2.4% of the AZD7442 group and in 2.1% of the placebo group. There was one case of severe or critical COVID-19; two COVID-19–related deaths occurred in the placebo group.

AZD7442 is being developed with the help of funding from the U.S. government. Dr. Levin has received support from GlaxoSmithKline companies. Many of the coauthors are employed by AstraZeneca and hold stock in the company. Dr. Razonable has disclosed no relevant financial relationships.

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

A one-time dose of two long-acting monoclonal antibodies reduced the risk of developing symptomatic COVID by 77% in comparison with placebo (P < .001) in a randomized, double-blind, placebo-controlled, phase 3 trial in adults, according to researchers who presented results at IDWeek 2021, an annual scientific meeting on infectious diseases.

The mix of tixagevimab and cilgavimab (AZD7442, Astra Zeneca) in a 300-mg dose is delivered in two intramuscular injections.

“This is the first long-acting combination of monoclonal antibodies that represents a potential new option to augment COVID-19 prevention,” said lead author Myron J. Levin, MD, a professor and pediatric infectious disease specialist at the University of Colorado at Denver, Aurora, who presented the findings of the PROVENT trial.

Both antibodies were taken from B cells donated by patients who had been infected with SARS-CoV-2, and they work synergistically, Dr. Levin said.

“The combination of them is better than adding results of each individually,” he said. “In vitro experiments have already shown that variants of interest and concern, including the Delta variant, are successfully neutralized by this cocktail.”

The trial was conducted in 87 sites in the United States, the United Kingdom, Spain, France, and Belgium. Participants included 5,197 unvaccinated adults who had never been infected with SARS-CoV-2 and either were at higher risk for inadequate response to COVID-19 vaccines because they were immunocompromised or were at high risk for exposure.

“Efficacy was observed through at least 3 months,” Dr. Levin said. “Preliminary pharmacokinetic modeling predicts potential protection for up to 12 months.”

Raymund Razonable, MD, an infectious disease expert with the Mayo Clinic in Rochester, Minn., who was not involved with the trial, told this news organization he was particularly interested in this combination because the developers made use of novel technology that extends the half-life of the antibodies and because of the large number of participants in the study.

Modeling that shows protection could last up to a year is novel and important, he said.

“People won’t need frequent injections,” Dr. Razonable said. With postexposure prophylaxis monoclonal cocktails, people may be given a dose a month, he noted.

Dr. Razonable said, “This is something intended to prevent COVID in people who are unvaccinated. The downside to that is we want people to get vaccinated. The best strategy so far is really vaccination.”

He said AZD7442 could potentially help fill the void for patients who are not able to respond to the COVID vaccines, including some who are immunocompromised or are undergoing chemotherapy.

Dr. Razonable said that, although the 77% reduction for developing symptomatic COVID-19 (95% confidence interval vs. placebo, 46.0-90.0; P < .001) is impressive, it is a reduction in relative risk. Still unknown is how much an individual’s absolute risk is reduced.

He also said it would be helpful to know how many people in the study population were immunocompromised, “because I think that’s where this product will be useful for prevention.”

The primary study endpoints were the first case of SARS-CoV-2 RT-PCR-positive symptomatic illness post dose and prior to day 183 (efficacy) as well as the safety of the product.

The cocktail appeared to be well tolerated. Adverse events occurred in 35% of participants administered AZD7442 and in 34% of the placebo group. Injection-site reactions occurred in 2.4% of the AZD7442 group and in 2.1% of the placebo group. There was one case of severe or critical COVID-19; two COVID-19–related deaths occurred in the placebo group.

AZD7442 is being developed with the help of funding from the U.S. government. Dr. Levin has received support from GlaxoSmithKline companies. Many of the coauthors are employed by AstraZeneca and hold stock in the company. Dr. Razonable has disclosed no relevant financial relationships.

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

A phase 3, randomized, double-blind, controlled trial has shown that oteseconazole (Mycovia Pharmaceuticals), an oral antifungal agent, is safe and effective in treating acute and recurrent yeast infections (vulvovaginal candidiasis [VVC]) and in preventing  recurrence of acute VVC episodes.

Findings of the ultraVIOLET trial, which compared oteseconazole with the standard fluconazole, were presented at IDWeek 2021, an annual scientific meeting on infectious diseases, by lead author Mark G. Martens, MD, a professor in the department of obstetrics and gynecology at Drexel University College of Medicine in Philadelphia.

About 75% of all women will have a yeast infection in their lifetime, Dr. Martens noted. About 138 million women worldwide have recurring episodes (at least three acute episodes in the last year) of the debilitating condition.

“Recurrent vulvovaginal candidiasis typically requires treatment of the acute episode followed by long-term suppressive therapy with either weekly or biweekly fluconazole,” Dr. Martens said. However, when therapy stops, more than 50% of patients with recurrent VVC experience an infection within the next 6 months, which takes a significant toll on daily life.

Additionally, fluconazole has been linked with safety issues concerning chronic dosing, he said, citing liver toxicity, drug-drug interactions and “increased risk of miscarriage and birth defects when used during pregnancy.”

Topical treatments have been associated with messy application and burning, he noted.

For this study, researchers enrolled 219 women with a history of recurrent VVC at 51 U.S. sites. Participants were randomized either to 600 mg oteseconazole on day 1, 450 mg oteseconazole on day 2 or placebo capsules; or three sequential 150 mg doses (every 72 hours) of fluconazole together with matching placebo capsules.

In the maintenance phase, 185 women with resolved acute VVC (clinical signs and symptoms were scored below 3) on day 14 received 150 mg oteseconazole or placebo weekly for 11 weeks.

Oteseconazole was superior to fluconazole/placebo in the proportion of subjects with at least one culture-verified acute VVC episode through week 50 in the intent-to-treat population (P < .001) which included subjects who failed to clear their infection in the induction phase.

The average percentage of participants with at least one culture-verified acute VVC episode through week 50 was lower in the oteseconazole group (5.1%), compared with the fluconazole/placebo group (42.2%).

Oteseconazole was noninferior to fluconazole in the proportion of subjects with resolved acute VVC infections at day 14 – 93.2% for the oteseconazole group vs. 95.8% for the fluconazole/placebo group.

The percentages of women who had at least one treatment-emergent adverse event (TEAE) were similar – 54% in the oteseconazole group and 64% in the fluconazole/placebo group.  Most TEAEs were mild or moderate and there were no drug-related SAEs or adverse effects on liver function.

“There was no difference in the two groups in he baseline characteristics of age, race, and history of diabetes,” he said.

Oluwatosin Goje, MD, an ob.gyn. with the Cleveland Clinic told this news organization that the drug may offer another option for women who don’t respond to azoles.

“The CDC guidelines say, and I agree, that most episodes of recurrent VVC that are caused by Candida albicans will respond to topical azoles, to oral azoles, to the known drugs that are available. You just may have to use them for a prolonged period of time,” Dr. Goje said. But some patients won’t respond to azoles, the currently available drugs, and topical treatments – so new options are welcome for them, she noted.

She pointed out that the U.S. Food and Drug Administration in June approved ibrexafungerp (Brexafemme), the first oral nonazole treatment for vaginal yeast infections. It was the first approved medicine in a novel antifungal class in more than 2 decades.

Dr. Goje, who runs a large clinic with substantial numbers of women with recurrent yeast infections, said the psychosocial problems women with recurrent yeast infections face – and the time off work and money spent trying to get temporary relief from over-the-counter medications – is underestimated.

“Women have long suffered vaginitis. It can be a lot of social and economic burden. So anything in the toolbox to help women is welcome,” Dr. Goje said.

The study was sponsored by Mycovia Pharmaceuticals. Dr. Martens reports no relevant financial relationships. Several coauthors are either employees of Mycovia or receive support from the company. Dr. Goje has disclosed no relevant financial relationships.

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

A phase 3, randomized, double-blind, controlled trial has shown that oteseconazole (Mycovia Pharmaceuticals), an oral antifungal agent, is safe and effective in treating acute and recurrent yeast infections (vulvovaginal candidiasis [VVC]) and in preventing  recurrence of acute VVC episodes.

Findings of the ultraVIOLET trial, which compared oteseconazole with the standard fluconazole, were presented at IDWeek 2021, an annual scientific meeting on infectious diseases, by lead author Mark G. Martens, MD, a professor in the department of obstetrics and gynecology at Drexel University College of Medicine in Philadelphia.

About 75% of all women will have a yeast infection in their lifetime, Dr. Martens noted. About 138 million women worldwide have recurring episodes (at least three acute episodes in the last year) of the debilitating condition.

“Recurrent vulvovaginal candidiasis typically requires treatment of the acute episode followed by long-term suppressive therapy with either weekly or biweekly fluconazole,” Dr. Martens said. However, when therapy stops, more than 50% of patients with recurrent VVC experience an infection within the next 6 months, which takes a significant toll on daily life.

Additionally, fluconazole has been linked with safety issues concerning chronic dosing, he said, citing liver toxicity, drug-drug interactions and “increased risk of miscarriage and birth defects when used during pregnancy.”

Topical treatments have been associated with messy application and burning, he noted.

For this study, researchers enrolled 219 women with a history of recurrent VVC at 51 U.S. sites. Participants were randomized either to 600 mg oteseconazole on day 1, 450 mg oteseconazole on day 2 or placebo capsules; or three sequential 150 mg doses (every 72 hours) of fluconazole together with matching placebo capsules.

In the maintenance phase, 185 women with resolved acute VVC (clinical signs and symptoms were scored below 3) on day 14 received 150 mg oteseconazole or placebo weekly for 11 weeks.

Oteseconazole was superior to fluconazole/placebo in the proportion of subjects with at least one culture-verified acute VVC episode through week 50 in the intent-to-treat population (P < .001) which included subjects who failed to clear their infection in the induction phase.

The average percentage of participants with at least one culture-verified acute VVC episode through week 50 was lower in the oteseconazole group (5.1%), compared with the fluconazole/placebo group (42.2%).

Oteseconazole was noninferior to fluconazole in the proportion of subjects with resolved acute VVC infections at day 14 – 93.2% for the oteseconazole group vs. 95.8% for the fluconazole/placebo group.

The percentages of women who had at least one treatment-emergent adverse event (TEAE) were similar – 54% in the oteseconazole group and 64% in the fluconazole/placebo group.  Most TEAEs were mild or moderate and there were no drug-related SAEs or adverse effects on liver function.

“There was no difference in the two groups in he baseline characteristics of age, race, and history of diabetes,” he said.

Oluwatosin Goje, MD, an ob.gyn. with the Cleveland Clinic told this news organization that the drug may offer another option for women who don’t respond to azoles.

“The CDC guidelines say, and I agree, that most episodes of recurrent VVC that are caused by Candida albicans will respond to topical azoles, to oral azoles, to the known drugs that are available. You just may have to use them for a prolonged period of time,” Dr. Goje said. But some patients won’t respond to azoles, the currently available drugs, and topical treatments – so new options are welcome for them, she noted.

She pointed out that the U.S. Food and Drug Administration in June approved ibrexafungerp (Brexafemme), the first oral nonazole treatment for vaginal yeast infections. It was the first approved medicine in a novel antifungal class in more than 2 decades.

Dr. Goje, who runs a large clinic with substantial numbers of women with recurrent yeast infections, said the psychosocial problems women with recurrent yeast infections face – and the time off work and money spent trying to get temporary relief from over-the-counter medications – is underestimated.

“Women have long suffered vaginitis. It can be a lot of social and economic burden. So anything in the toolbox to help women is welcome,” Dr. Goje said.

The study was sponsored by Mycovia Pharmaceuticals. Dr. Martens reports no relevant financial relationships. Several coauthors are either employees of Mycovia or receive support from the company. Dr. Goje has disclosed no relevant financial relationships.

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

A phase 3, randomized, double-blind, controlled trial has shown that oteseconazole (Mycovia Pharmaceuticals), an oral antifungal agent, is safe and effective in treating acute and recurrent yeast infections (vulvovaginal candidiasis [VVC]) and in preventing  recurrence of acute VVC episodes.

Findings of the ultraVIOLET trial, which compared oteseconazole with the standard fluconazole, were presented at IDWeek 2021, an annual scientific meeting on infectious diseases, by lead author Mark G. Martens, MD, a professor in the department of obstetrics and gynecology at Drexel University College of Medicine in Philadelphia.

About 75% of all women will have a yeast infection in their lifetime, Dr. Martens noted. About 138 million women worldwide have recurring episodes (at least three acute episodes in the last year) of the debilitating condition.

“Recurrent vulvovaginal candidiasis typically requires treatment of the acute episode followed by long-term suppressive therapy with either weekly or biweekly fluconazole,” Dr. Martens said. However, when therapy stops, more than 50% of patients with recurrent VVC experience an infection within the next 6 months, which takes a significant toll on daily life.

Additionally, fluconazole has been linked with safety issues concerning chronic dosing, he said, citing liver toxicity, drug-drug interactions and “increased risk of miscarriage and birth defects when used during pregnancy.”

Topical treatments have been associated with messy application and burning, he noted.

For this study, researchers enrolled 219 women with a history of recurrent VVC at 51 U.S. sites. Participants were randomized either to 600 mg oteseconazole on day 1, 450 mg oteseconazole on day 2 or placebo capsules; or three sequential 150 mg doses (every 72 hours) of fluconazole together with matching placebo capsules.

In the maintenance phase, 185 women with resolved acute VVC (clinical signs and symptoms were scored below 3) on day 14 received 150 mg oteseconazole or placebo weekly for 11 weeks.

Oteseconazole was superior to fluconazole/placebo in the proportion of subjects with at least one culture-verified acute VVC episode through week 50 in the intent-to-treat population (P < .001) which included subjects who failed to clear their infection in the induction phase.

The average percentage of participants with at least one culture-verified acute VVC episode through week 50 was lower in the oteseconazole group (5.1%), compared with the fluconazole/placebo group (42.2%).

Oteseconazole was noninferior to fluconazole in the proportion of subjects with resolved acute VVC infections at day 14 – 93.2% for the oteseconazole group vs. 95.8% for the fluconazole/placebo group.

The percentages of women who had at least one treatment-emergent adverse event (TEAE) were similar – 54% in the oteseconazole group and 64% in the fluconazole/placebo group.  Most TEAEs were mild or moderate and there were no drug-related SAEs or adverse effects on liver function.

“There was no difference in the two groups in he baseline characteristics of age, race, and history of diabetes,” he said.

Oluwatosin Goje, MD, an ob.gyn. with the Cleveland Clinic told this news organization that the drug may offer another option for women who don’t respond to azoles.

“The CDC guidelines say, and I agree, that most episodes of recurrent VVC that are caused by Candida albicans will respond to topical azoles, to oral azoles, to the known drugs that are available. You just may have to use them for a prolonged period of time,” Dr. Goje said. But some patients won’t respond to azoles, the currently available drugs, and topical treatments – so new options are welcome for them, she noted.

She pointed out that the U.S. Food and Drug Administration in June approved ibrexafungerp (Brexafemme), the first oral nonazole treatment for vaginal yeast infections. It was the first approved medicine in a novel antifungal class in more than 2 decades.

Dr. Goje, who runs a large clinic with substantial numbers of women with recurrent yeast infections, said the psychosocial problems women with recurrent yeast infections face – and the time off work and money spent trying to get temporary relief from over-the-counter medications – is underestimated.

“Women have long suffered vaginitis. It can be a lot of social and economic burden. So anything in the toolbox to help women is welcome,” Dr. Goje said.

The study was sponsored by Mycovia Pharmaceuticals. Dr. Martens reports no relevant financial relationships. Several coauthors are either employees of Mycovia or receive support from the company. Dr. Goje has disclosed no relevant financial relationships.

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

Two of the three late-breaking abstract sessions coming up this week at IDWeek 2021, an annual scientific meeting on infectious diseases, are filled with the most recent evidence on COVID-19 prevention and treatment.

Adarsh Bhimraj, MD, a vice chair of the conference, said in an interview that attendees will leave the virtual conference with an up-to-date view of what’s promising in the fight against COVID-19 globally and what questions are as yet unanswered.

Researchers will also present findings on promising new antibiotics in the pipeline, stewardship efforts, health disparities, telemedicine advances, and emerging pathogens, but at least a quarter of the program is devoted to COVID-19.

“It’s hard to ignore the elephant in the room,” Dr. Bhimraj said.

Vaccine distribution will be among the hot topics at the global conference, he said, in light of the recent decisions by the Food and Drug Administration and the Centers for Disease Control and Prevention to reserve boosters for those at greatest risk.

Although the United States and other high-resource countries are deciding who should get boosters, only 10% of the developing world has received even a single dose, he noted.

The conference will also present a worldwide view of scientific collaboration to address the COVID pandemic and pandemics yet to come, Dr. Bhimraj said.

He highlighted a talk on Oct. 2, to be delivered by South African human rights attorney and social justice activist Fatima Hassan, called “Global Vaccines and Preventive Care Inequities: Implications and Solutions Beyond the Pandemic.”

The session looks ahead to building systems to share resources and knowledge to end deadly outbreaks with an equitable approach.

“We live in a global village,” Dr. Bhimraj said. “It isn’t just the right thing to do, it’s the pragmatic thing to do.”
 

Controversies in non-COVID diseases

Controversies and new treatments are plentiful in other diseases as well.

• At an HIV session, arguments will be presented regarding the sustainability and practicalities of telemedicine in HIV. Speakers will argue for and against telemedicine as a permanent practice changer for the field.
• In a session on Oct. 1, panelists will discuss pros and cons of information published in preprints versus peer-reviewed journals and how to assess when research findings should lead to practice change.
• Also on Oct. 1, panelists in a symposium will discuss advantages and disadvantages of antifungal treatments for children who have received solid organ transplants.
• Antimicrobial stewardship continues to be a primary topic at IDWeek, this year with additional pandemic challenges. Sessions will address trends in use and diagnostic advances to help in prescribing.
• The pipeline for new antibiotics continues to face barriers regarding production and development. No new classes of antibiotics have been discovered since the 1980s. Pew has that there are too few drugs in development to meet current and anticipated need.
• This year’s program offers a symposium on private-public partnerships to help jump-start development.
• One of the most popular sessions returning this year is “Clinical Trials That Will Change Your Practice,” Dr. Bhimraj said. This year, that session will be reserved for non-COVID infectious disease research. Presenters will summarize the findings of top work published in the past year.

Around-the-world COVID view

Again this year, global experts will present a round-the-clock session called “Chasing the Sun” the day before the main sessions. It will include updates on COVID throughout the world. Barney Graham, MD, PhD, deputy director of the National Institutes of Health’s Vaccine Research Center, will kick off the program with an address on the future of vaccinology. This will be followed by updates on the state of the disease in Central and South America, Japan, Asia Pacific, India, and Africa.

Sandra Harwood, IDWeek conference secretariat, who proposed the idea for the first Chasing the Sun session last year, said in an interview that the updates will highlight particular COVID challenges experienced in various countries.

For example, leaders of India’s session will address why a potentially fatal fungal disease struck many COVID-19 patients in that country. Japan’s update will include how Olympic organizers planned for and dealt with the virus’s threat in Tokyo.

Ms. Harwood said that all the COVID sessions in Chasing the Sun and throughout the program will be free to clinicians inside and outside the conference, thanks to a grant from the CDC.

An address by CDC Director Rochelle Walensky, MD, MPH, on Sept. 30 will wrap up Chasing the Sun and launch the main IDWeek program.

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

Two of the three late-breaking abstract sessions coming up this week at IDWeek 2021, an annual scientific meeting on infectious diseases, are filled with the most recent evidence on COVID-19 prevention and treatment.

Adarsh Bhimraj, MD, a vice chair of the conference, said in an interview that attendees will leave the virtual conference with an up-to-date view of what’s promising in the fight against COVID-19 globally and what questions are as yet unanswered.

Researchers will also present findings on promising new antibiotics in the pipeline, stewardship efforts, health disparities, telemedicine advances, and emerging pathogens, but at least a quarter of the program is devoted to COVID-19.

“It’s hard to ignore the elephant in the room,” Dr. Bhimraj said.

Vaccine distribution will be among the hot topics at the global conference, he said, in light of the recent decisions by the Food and Drug Administration and the Centers for Disease Control and Prevention to reserve boosters for those at greatest risk.

Although the United States and other high-resource countries are deciding who should get boosters, only 10% of the developing world has received even a single dose, he noted.

The conference will also present a worldwide view of scientific collaboration to address the COVID pandemic and pandemics yet to come, Dr. Bhimraj said.

He highlighted a talk on Oct. 2, to be delivered by South African human rights attorney and social justice activist Fatima Hassan, called “Global Vaccines and Preventive Care Inequities: Implications and Solutions Beyond the Pandemic.”

The session looks ahead to building systems to share resources and knowledge to end deadly outbreaks with an equitable approach.

“We live in a global village,” Dr. Bhimraj said. “It isn’t just the right thing to do, it’s the pragmatic thing to do.”
 

Controversies in non-COVID diseases

Controversies and new treatments are plentiful in other diseases as well.

• At an HIV session, arguments will be presented regarding the sustainability and practicalities of telemedicine in HIV. Speakers will argue for and against telemedicine as a permanent practice changer for the field.
• In a session on Oct. 1, panelists will discuss pros and cons of information published in preprints versus peer-reviewed journals and how to assess when research findings should lead to practice change.
• Also on Oct. 1, panelists in a symposium will discuss advantages and disadvantages of antifungal treatments for children who have received solid organ transplants.
• Antimicrobial stewardship continues to be a primary topic at IDWeek, this year with additional pandemic challenges. Sessions will address trends in use and diagnostic advances to help in prescribing.
• The pipeline for new antibiotics continues to face barriers regarding production and development. No new classes of antibiotics have been discovered since the 1980s. Pew has that there are too few drugs in development to meet current and anticipated need.
• This year’s program offers a symposium on private-public partnerships to help jump-start development.
• One of the most popular sessions returning this year is “Clinical Trials That Will Change Your Practice,” Dr. Bhimraj said. This year, that session will be reserved for non-COVID infectious disease research. Presenters will summarize the findings of top work published in the past year.

Around-the-world COVID view

Again this year, global experts will present a round-the-clock session called “Chasing the Sun” the day before the main sessions. It will include updates on COVID throughout the world. Barney Graham, MD, PhD, deputy director of the National Institutes of Health’s Vaccine Research Center, will kick off the program with an address on the future of vaccinology. This will be followed by updates on the state of the disease in Central and South America, Japan, Asia Pacific, India, and Africa.

Sandra Harwood, IDWeek conference secretariat, who proposed the idea for the first Chasing the Sun session last year, said in an interview that the updates will highlight particular COVID challenges experienced in various countries.

For example, leaders of India’s session will address why a potentially fatal fungal disease struck many COVID-19 patients in that country. Japan’s update will include how Olympic organizers planned for and dealt with the virus’s threat in Tokyo.

Ms. Harwood said that all the COVID sessions in Chasing the Sun and throughout the program will be free to clinicians inside and outside the conference, thanks to a grant from the CDC.

An address by CDC Director Rochelle Walensky, MD, MPH, on Sept. 30 will wrap up Chasing the Sun and launch the main IDWeek program.

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

Two of the three late-breaking abstract sessions coming up this week at IDWeek 2021, an annual scientific meeting on infectious diseases, are filled with the most recent evidence on COVID-19 prevention and treatment.

Adarsh Bhimraj, MD, a vice chair of the conference, said in an interview that attendees will leave the virtual conference with an up-to-date view of what’s promising in the fight against COVID-19 globally and what questions are as yet unanswered.

Researchers will also present findings on promising new antibiotics in the pipeline, stewardship efforts, health disparities, telemedicine advances, and emerging pathogens, but at least a quarter of the program is devoted to COVID-19.

“It’s hard to ignore the elephant in the room,” Dr. Bhimraj said.

Vaccine distribution will be among the hot topics at the global conference, he said, in light of the recent decisions by the Food and Drug Administration and the Centers for Disease Control and Prevention to reserve boosters for those at greatest risk.

Although the United States and other high-resource countries are deciding who should get boosters, only 10% of the developing world has received even a single dose, he noted.

The conference will also present a worldwide view of scientific collaboration to address the COVID pandemic and pandemics yet to come, Dr. Bhimraj said.

He highlighted a talk on Oct. 2, to be delivered by South African human rights attorney and social justice activist Fatima Hassan, called “Global Vaccines and Preventive Care Inequities: Implications and Solutions Beyond the Pandemic.”

The session looks ahead to building systems to share resources and knowledge to end deadly outbreaks with an equitable approach.

“We live in a global village,” Dr. Bhimraj said. “It isn’t just the right thing to do, it’s the pragmatic thing to do.”
 

Controversies in non-COVID diseases

Controversies and new treatments are plentiful in other diseases as well.

• At an HIV session, arguments will be presented regarding the sustainability and practicalities of telemedicine in HIV. Speakers will argue for and against telemedicine as a permanent practice changer for the field.
• In a session on Oct. 1, panelists will discuss pros and cons of information published in preprints versus peer-reviewed journals and how to assess when research findings should lead to practice change.
• Also on Oct. 1, panelists in a symposium will discuss advantages and disadvantages of antifungal treatments for children who have received solid organ transplants.
• Antimicrobial stewardship continues to be a primary topic at IDWeek, this year with additional pandemic challenges. Sessions will address trends in use and diagnostic advances to help in prescribing.
• The pipeline for new antibiotics continues to face barriers regarding production and development. No new classes of antibiotics have been discovered since the 1980s. Pew has that there are too few drugs in development to meet current and anticipated need.
• This year’s program offers a symposium on private-public partnerships to help jump-start development.
• One of the most popular sessions returning this year is “Clinical Trials That Will Change Your Practice,” Dr. Bhimraj said. This year, that session will be reserved for non-COVID infectious disease research. Presenters will summarize the findings of top work published in the past year.

Around-the-world COVID view

Again this year, global experts will present a round-the-clock session called “Chasing the Sun” the day before the main sessions. It will include updates on COVID throughout the world. Barney Graham, MD, PhD, deputy director of the National Institutes of Health’s Vaccine Research Center, will kick off the program with an address on the future of vaccinology. This will be followed by updates on the state of the disease in Central and South America, Japan, Asia Pacific, India, and Africa.

Sandra Harwood, IDWeek conference secretariat, who proposed the idea for the first Chasing the Sun session last year, said in an interview that the updates will highlight particular COVID challenges experienced in various countries.

For example, leaders of India’s session will address why a potentially fatal fungal disease struck many COVID-19 patients in that country. Japan’s update will include how Olympic organizers planned for and dealt with the virus’s threat in Tokyo.

Ms. Harwood said that all the COVID sessions in Chasing the Sun and throughout the program will be free to clinicians inside and outside the conference, thanks to a grant from the CDC.

An address by CDC Director Rochelle Walensky, MD, MPH, on Sept. 30 will wrap up Chasing the Sun and launch the main IDWeek program.

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

The number of U.S. adults who are at least partially vaccinated rose five percentage points to 72% in August, a slightly faster increase than in previous months, according to the latest monthly COVID-19 Vaccine Monitor report of the Kaiser Family Foundation (KFF).

The largest increases in vaccine uptake between July and September were among Hispanic adults and people aged 18-29 years. Roughly equal shares of adults now report being vaccinated across racial and ethnic groups: 71% of White adults, 70% of Black adults, and 73% of Hispanic adults.

Overall, the big takeaway of the latest Kaiser COVID-19 survey is that the partisan divide on all aspects of the pandemic, from vaccination status to attitudes toward vaccination and mask mandates, remains as wide as ever.

The only thing that Republicans, Democrats, and Independents mostly agree on is that COVID-19 will probably become an endemic disease like influenza. Seventy-nine percent of respondents agreed with that statement; 14% predicted that COVID-19 would probably be largely eliminated in future years, like polio.
 

Delta motivated many

The most important factor that recently led people toward being vaccinated against COVID-19 was the surge in cases, hospitalizations, and deaths due to the Delta variant, KFF reports.

Full approval of the Pfizer vaccine by the Food and Drug Administration and the increasing prevalence of vaccine mandates played secondary roles in the vaccination uptick.

Specifically, 10% of the recently vaccinated said the main reason they got shots was the increase in COVID-19 cases due to the Delta variant. Concern about reports of local hospitals and intensive care units filling up with COVID-19 patients was the main motivator for 12% of those who just got shots. Fourteen percent of the recently vaccinated got inoculated mainly because someone they knew had become seriously ill or had died from COVID-19.

The role of the Delta threat is also evident with regard to where those who were recently vaccinated live. Twenty-four percent of those who received their first dose of vaccine after June 1, 2021, reside in counties with a high COVID-19 case rate; 15% of them live in counties with a relatively low case rate.

Despite the recent surge in vaccinations, however, 7% of adults are still taking a wait-and-see approach; 4% said they’d get a shot only if required; and 12% said they definitely wouldn’t get vaccinated. The latter figure has barely budged since January of this year.

Ninety percent of Democrats said they had received at least one dose of the COVID-19 vaccine, vs. 68% of Independents, and 58% of Republicans.

Wealthier, better educated, urban, and older people were more likely to be vaccinated, with one exception: Sixty-eight percent of those aged 18-29 were vaccinated, vs. 66% of those aged 30-49. The group least likely to be vaccinated were uninsured people younger than 65, suggesting that some of them were unaware that the shot is free.
 

Partisan affiliation

Attitudes toward vaccine booster shots – which are now recommended for people older than 65, the immunocompromised, and certain frontline workers – largely fell along party lines and/or reflected whether respondents had been vaccinated.

Discussion of the boosters, KFF said, “appears to be a net positive for people who are already vaccinated, but a net negative for the unvaccinated. While a larger share of vaccinated adults say the information they have seen about boosters has been helpful (54%) than find it confusing (35%), among the unvaccinated almost twice as many find the information confusing as find it helpful (45% vs. 24%).”

Among fully vaccinated adults, 68% of Democrats say they’d definitely get a booster, and 20% say they probably would. Among Republicans, those percentages are 36% and 33%, respectively. Independents fall in between the other groups.

Although 82% of Democrats say the boosters show that scientists are continuing to make vaccines more effective, 52% of Republicans say that it shows that the vaccines are not working as well as promised.

Similarly, partisan attitudes emerged in questions about breakthrough infections. The fact that COVID-19 cases are fairly mild when they occur among persons who have been vaccinated indicates that the vaccines are working, said 87% of Democrats, but only 55% of Republicans agreed with that assessment.

In contrast, just 10% of Democrats but 39% of Republicans said that breakthrough infections mean the vaccines are not working.
 

Vaccine requirements

The public is more evenly divided on vaccine requirements. About 6 in 10 respondents said that vaccines should be required for health care workers (62%) and schoolteachers (58%). Slim majorities supported mandates for federal government employees (55%), college students (55%), and state and local government employees (54%).

On the question of whether employers in general should require their workers to be vaccinated, 48% of respondents said they should, and 50% said they should not.

Similarly, 52% said that all schools should mandate vaccines for eligible students; 46% didn’t approve of such requirements.

Three in four Democrats supported employer vaccine mandates, compared to 45% of Independents and just 20% of Republicans. Large partisan gaps were also seen for government, school, and health care vaccine mandates.

In contrast, 78% of the public favored requiring large employers to give their workers paid time off to get vaccinated and to recover from any side effects.
 

Twenty percent of workers under mandates

One in five workers said their employers require COVID-19 vaccination. Twenty-eight percent of employed people want their employers to require vaccination, and 50% don’t.

Again, the responses broke down along party lines, with 52% of Democrats, 21% of Independents, and 10% of Republicans favoring a vaccine mandate by their employers.

Most unvaccinated people didn’t support an employer mandate. A third of unvaccinated workers said they’d be likely to get vaccinated if their companies required it, but most of them said they would choose weekly testing if offered the option.

Being unable to use gyms, restaurants, or indoor entertainment venues that require vaccination was cited by 13% of the recently vaccinated as the main reason why they got shots.

The public was evenly divided on whether states or local governments should require such businesses to mandate that staff and customers show proof of vaccination. Although the views of the public were tied on this issue overall, 79% of Democrats, 43% of Independents, and 21% of Republicans supported having these kinds of businesses require proof of vaccination.

On school mask mandates, 56% of the respondents supported requiring all students and staff to wear masks. Favoring this kind of mandate were 83% of Democrats, 53% of Independents, and 29% of Republicans.

Partisanship also defined how Democrats and Republicans viewed the current high number of COVID-19 cases. Most Democrats blamed people who don’t wear masks and those who don’t get vaccinated, whereas Republicans were more likely to blame immigrants and tourists bringing COVID-19 into the United States.

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

The number of U.S. adults who are at least partially vaccinated rose five percentage points to 72% in August, a slightly faster increase than in previous months, according to the latest monthly COVID-19 Vaccine Monitor report of the Kaiser Family Foundation (KFF).

The largest increases in vaccine uptake between July and September were among Hispanic adults and people aged 18-29 years. Roughly equal shares of adults now report being vaccinated across racial and ethnic groups: 71% of White adults, 70% of Black adults, and 73% of Hispanic adults.

Overall, the big takeaway of the latest Kaiser COVID-19 survey is that the partisan divide on all aspects of the pandemic, from vaccination status to attitudes toward vaccination and mask mandates, remains as wide as ever.

The only thing that Republicans, Democrats, and Independents mostly agree on is that COVID-19 will probably become an endemic disease like influenza. Seventy-nine percent of respondents agreed with that statement; 14% predicted that COVID-19 would probably be largely eliminated in future years, like polio.
 

Delta motivated many

The most important factor that recently led people toward being vaccinated against COVID-19 was the surge in cases, hospitalizations, and deaths due to the Delta variant, KFF reports.

Full approval of the Pfizer vaccine by the Food and Drug Administration and the increasing prevalence of vaccine mandates played secondary roles in the vaccination uptick.

Specifically, 10% of the recently vaccinated said the main reason they got shots was the increase in COVID-19 cases due to the Delta variant. Concern about reports of local hospitals and intensive care units filling up with COVID-19 patients was the main motivator for 12% of those who just got shots. Fourteen percent of the recently vaccinated got inoculated mainly because someone they knew had become seriously ill or had died from COVID-19.

The role of the Delta threat is also evident with regard to where those who were recently vaccinated live. Twenty-four percent of those who received their first dose of vaccine after June 1, 2021, reside in counties with a high COVID-19 case rate; 15% of them live in counties with a relatively low case rate.

Despite the recent surge in vaccinations, however, 7% of adults are still taking a wait-and-see approach; 4% said they’d get a shot only if required; and 12% said they definitely wouldn’t get vaccinated. The latter figure has barely budged since January of this year.

Ninety percent of Democrats said they had received at least one dose of the COVID-19 vaccine, vs. 68% of Independents, and 58% of Republicans.

Wealthier, better educated, urban, and older people were more likely to be vaccinated, with one exception: Sixty-eight percent of those aged 18-29 were vaccinated, vs. 66% of those aged 30-49. The group least likely to be vaccinated were uninsured people younger than 65, suggesting that some of them were unaware that the shot is free.
 

Partisan affiliation

Attitudes toward vaccine booster shots – which are now recommended for people older than 65, the immunocompromised, and certain frontline workers – largely fell along party lines and/or reflected whether respondents had been vaccinated.

Discussion of the boosters, KFF said, “appears to be a net positive for people who are already vaccinated, but a net negative for the unvaccinated. While a larger share of vaccinated adults say the information they have seen about boosters has been helpful (54%) than find it confusing (35%), among the unvaccinated almost twice as many find the information confusing as find it helpful (45% vs. 24%).”

Among fully vaccinated adults, 68% of Democrats say they’d definitely get a booster, and 20% say they probably would. Among Republicans, those percentages are 36% and 33%, respectively. Independents fall in between the other groups.

Although 82% of Democrats say the boosters show that scientists are continuing to make vaccines more effective, 52% of Republicans say that it shows that the vaccines are not working as well as promised.

Similarly, partisan attitudes emerged in questions about breakthrough infections. The fact that COVID-19 cases are fairly mild when they occur among persons who have been vaccinated indicates that the vaccines are working, said 87% of Democrats, but only 55% of Republicans agreed with that assessment.

In contrast, just 10% of Democrats but 39% of Republicans said that breakthrough infections mean the vaccines are not working.
 

Vaccine requirements

The public is more evenly divided on vaccine requirements. About 6 in 10 respondents said that vaccines should be required for health care workers (62%) and schoolteachers (58%). Slim majorities supported mandates for federal government employees (55%), college students (55%), and state and local government employees (54%).

On the question of whether employers in general should require their workers to be vaccinated, 48% of respondents said they should, and 50% said they should not.

Similarly, 52% said that all schools should mandate vaccines for eligible students; 46% didn’t approve of such requirements.

Three in four Democrats supported employer vaccine mandates, compared to 45% of Independents and just 20% of Republicans. Large partisan gaps were also seen for government, school, and health care vaccine mandates.

In contrast, 78% of the public favored requiring large employers to give their workers paid time off to get vaccinated and to recover from any side effects.
 

Twenty percent of workers under mandates

One in five workers said their employers require COVID-19 vaccination. Twenty-eight percent of employed people want their employers to require vaccination, and 50% don’t.

Again, the responses broke down along party lines, with 52% of Democrats, 21% of Independents, and 10% of Republicans favoring a vaccine mandate by their employers.

Most unvaccinated people didn’t support an employer mandate. A third of unvaccinated workers said they’d be likely to get vaccinated if their companies required it, but most of them said they would choose weekly testing if offered the option.

Being unable to use gyms, restaurants, or indoor entertainment venues that require vaccination was cited by 13% of the recently vaccinated as the main reason why they got shots.

The public was evenly divided on whether states or local governments should require such businesses to mandate that staff and customers show proof of vaccination. Although the views of the public were tied on this issue overall, 79% of Democrats, 43% of Independents, and 21% of Republicans supported having these kinds of businesses require proof of vaccination.

On school mask mandates, 56% of the respondents supported requiring all students and staff to wear masks. Favoring this kind of mandate were 83% of Democrats, 53% of Independents, and 29% of Republicans.

Partisanship also defined how Democrats and Republicans viewed the current high number of COVID-19 cases. Most Democrats blamed people who don’t wear masks and those who don’t get vaccinated, whereas Republicans were more likely to blame immigrants and tourists bringing COVID-19 into the United States.

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

The number of U.S. adults who are at least partially vaccinated rose five percentage points to 72% in August, a slightly faster increase than in previous months, according to the latest monthly COVID-19 Vaccine Monitor report of the Kaiser Family Foundation (KFF).

The largest increases in vaccine uptake between July and September were among Hispanic adults and people aged 18-29 years. Roughly equal shares of adults now report being vaccinated across racial and ethnic groups: 71% of White adults, 70% of Black adults, and 73% of Hispanic adults.

Overall, the big takeaway of the latest Kaiser COVID-19 survey is that the partisan divide on all aspects of the pandemic, from vaccination status to attitudes toward vaccination and mask mandates, remains as wide as ever.

The only thing that Republicans, Democrats, and Independents mostly agree on is that COVID-19 will probably become an endemic disease like influenza. Seventy-nine percent of respondents agreed with that statement; 14% predicted that COVID-19 would probably be largely eliminated in future years, like polio.
 

Delta motivated many

The most important factor that recently led people toward being vaccinated against COVID-19 was the surge in cases, hospitalizations, and deaths due to the Delta variant, KFF reports.

Full approval of the Pfizer vaccine by the Food and Drug Administration and the increasing prevalence of vaccine mandates played secondary roles in the vaccination uptick.

Specifically, 10% of the recently vaccinated said the main reason they got shots was the increase in COVID-19 cases due to the Delta variant. Concern about reports of local hospitals and intensive care units filling up with COVID-19 patients was the main motivator for 12% of those who just got shots. Fourteen percent of the recently vaccinated got inoculated mainly because someone they knew had become seriously ill or had died from COVID-19.

The role of the Delta threat is also evident with regard to where those who were recently vaccinated live. Twenty-four percent of those who received their first dose of vaccine after June 1, 2021, reside in counties with a high COVID-19 case rate; 15% of them live in counties with a relatively low case rate.

Despite the recent surge in vaccinations, however, 7% of adults are still taking a wait-and-see approach; 4% said they’d get a shot only if required; and 12% said they definitely wouldn’t get vaccinated. The latter figure has barely budged since January of this year.

Ninety percent of Democrats said they had received at least one dose of the COVID-19 vaccine, vs. 68% of Independents, and 58% of Republicans.

Wealthier, better educated, urban, and older people were more likely to be vaccinated, with one exception: Sixty-eight percent of those aged 18-29 were vaccinated, vs. 66% of those aged 30-49. The group least likely to be vaccinated were uninsured people younger than 65, suggesting that some of them were unaware that the shot is free.
 

Partisan affiliation

Attitudes toward vaccine booster shots – which are now recommended for people older than 65, the immunocompromised, and certain frontline workers – largely fell along party lines and/or reflected whether respondents had been vaccinated.

Discussion of the boosters, KFF said, “appears to be a net positive for people who are already vaccinated, but a net negative for the unvaccinated. While a larger share of vaccinated adults say the information they have seen about boosters has been helpful (54%) than find it confusing (35%), among the unvaccinated almost twice as many find the information confusing as find it helpful (45% vs. 24%).”

Among fully vaccinated adults, 68% of Democrats say they’d definitely get a booster, and 20% say they probably would. Among Republicans, those percentages are 36% and 33%, respectively. Independents fall in between the other groups.

Although 82% of Democrats say the boosters show that scientists are continuing to make vaccines more effective, 52% of Republicans say that it shows that the vaccines are not working as well as promised.

Similarly, partisan attitudes emerged in questions about breakthrough infections. The fact that COVID-19 cases are fairly mild when they occur among persons who have been vaccinated indicates that the vaccines are working, said 87% of Democrats, but only 55% of Republicans agreed with that assessment.

In contrast, just 10% of Democrats but 39% of Republicans said that breakthrough infections mean the vaccines are not working.
 

Vaccine requirements

The public is more evenly divided on vaccine requirements. About 6 in 10 respondents said that vaccines should be required for health care workers (62%) and schoolteachers (58%). Slim majorities supported mandates for federal government employees (55%), college students (55%), and state and local government employees (54%).

On the question of whether employers in general should require their workers to be vaccinated, 48% of respondents said they should, and 50% said they should not.

Similarly, 52% said that all schools should mandate vaccines for eligible students; 46% didn’t approve of such requirements.

Three in four Democrats supported employer vaccine mandates, compared to 45% of Independents and just 20% of Republicans. Large partisan gaps were also seen for government, school, and health care vaccine mandates.

In contrast, 78% of the public favored requiring large employers to give their workers paid time off to get vaccinated and to recover from any side effects.
 

Twenty percent of workers under mandates

One in five workers said their employers require COVID-19 vaccination. Twenty-eight percent of employed people want their employers to require vaccination, and 50% don’t.

Again, the responses broke down along party lines, with 52% of Democrats, 21% of Independents, and 10% of Republicans favoring a vaccine mandate by their employers.

Most unvaccinated people didn’t support an employer mandate. A third of unvaccinated workers said they’d be likely to get vaccinated if their companies required it, but most of them said they would choose weekly testing if offered the option.

Being unable to use gyms, restaurants, or indoor entertainment venues that require vaccination was cited by 13% of the recently vaccinated as the main reason why they got shots.

The public was evenly divided on whether states or local governments should require such businesses to mandate that staff and customers show proof of vaccination. Although the views of the public were tied on this issue overall, 79% of Democrats, 43% of Independents, and 21% of Republicans supported having these kinds of businesses require proof of vaccination.

On school mask mandates, 56% of the respondents supported requiring all students and staff to wear masks. Favoring this kind of mandate were 83% of Democrats, 53% of Independents, and 29% of Republicans.

Partisanship also defined how Democrats and Republicans viewed the current high number of COVID-19 cases. Most Democrats blamed people who don’t wear masks and those who don’t get vaccinated, whereas Republicans were more likely to blame immigrants and tourists bringing COVID-19 into the United States.

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

A monoclonal antibody combination of casirivimab and imdevimab (REGEN-COV) significantly reduced the risk of COVID-19–related hospitalizations and death from any cause in the phase 3 portion of an adaptive trial of outpatients.

Researchers, led by David Weinreich, MD, MBA, executive vice president of the drug cocktail’s manufacturer Regeneron, found in the randomized trial that the combination also resolved symptoms and reduced the SARS-CoV-2 viral load more quickly, compared with placebo.

Findings were published in the New England Journal of Medicine. 

COVID-related hospitalization or death from any cause occurred in 18 of 1,355 patients (1.3%) in the group getting 2,400 mg infusions of the study drug, compared with 62 (4.6%) of 1,341 in the matching placebo group, indicating a relative risk reduction of 71.3%; P < .001.

Sunil Joshi, MD, president of the Duval County Medical Society Foundation and an immunologist in Jacksonville, Fla., said in an interview that these findings confirm benefits of REGEN-COV and are very good news for a patient group that includes those age 65 and older with high blood pressure, diabetes, or obesity; and for people not vaccinated, who are all at high risk of hospitalization or death if they get COVID-19.

“Vaccines are critically important,” he said, “but if you were to be infected and know that there’s a way to keep yourself out of the hospital, this is very good news.”
 

Researchers seek lowest doses

This trial found that the effect was similar when researchers cut the doses in half. These outcomes occurred in 7 of 736 (1%) of patients given 1,200 mg of REGEN-COV and in 24 (3.2%) of 748 in the matching placebo group (relative risk reduction, 70.4%; P = .002).

Symptoms were resolved on average 4 days earlier with each REGEN-COV dose than with placebo (10 days vs. 14 days; P < .001 for both comparisons).

Dr. Weinreich said in an interview that trials will continue to find the lowest effective doses that can stand up to all evolving variants.

“This is one of those settings where you don’t want to underdose. You’ve got one shot at this,” he said. “We’d love to do lower doses. It would be more convenient and we could treat more patients, but if it generates more clinical failures or doesn’t work with certain variants, then you’ve done a huge disservice to the world.”

Also new in this study is that researchers tested not only seronegative patients, but patients at high risk regardless of blood antibody status, he said.

“It’s the first suggestion of data that if you’re breaking through a vaccine and you’re at high risk, the use of the cocktail is something to strongly consider because treatment early is better than treatment later,” Dr. Weinreich said.

In addition to efficacy, the phase 3 trial demonstrated the cocktail had a good safety profile. Serious adverse events occurred more often in the placebo group (4%) than in the 1,200-mg group (1.1%) and the 2,400-mg group (1.3%). Infusion reactions (grade 2 or higher) occurred in less than 0.3% of patients in all groups. 

William Fales, MD, state medical director for the Michigan Department of Health and Human Services, said the results confirm the promise of REGEN-COV for reducing hospitalizations and death in a peer-reviewed publication.
 

COVID-19 a moving target

However, Dr. Fales noted that COVID-19 is a moving target with emerging variants. The criteria for populations at high risk have also broadened since the start of the study, he said.

“A great example is pregnancy is now included as high risk, and that would have likely been a specific contraindication of patients in this clinical trial,” he said.

Dr. Fales said Michigan has been using both REGEN-COV and the Eli Lilly combination of bamlanivimab and etesevimab, which also has an emergency use authorization (EUA) from the Food and Drug Administration, with positive results.

REGEN-COV has an EUA to treat people who are at high risk of serious consequences from COVID-19, including those who are already infected (nonhospitalized) or those in certain postexposure prophylaxis settings.

“We’re seeing very low hospitalization rates and few deaths in a state that is predominately Delta,” Dr. Fales said. “So, this makes us feel that we’re doing the right thing and supports the current efforts around the country to make monoclonal antibody therapy available to high-risk patients.”  

Dr. Joshi noted that trial results have been emerging from other monoclonal antibody cocktails with different COVID-19 patient groups.

However, he said in an interview, “how much more effective they would be than this is something we’d have to look at, as 71% effectiveness in keeping people out of the hospital is pretty good for any treatment.”

“These are great numbers, but vaccination itself keeps you from getting the disease in the first place and not just for a short time period. This treatment is just that – a treatment. It gets you through that episode but it doesn’t mean you won’t get sick again. You don’t develop an immune response as you do with the vaccine,” he said.

Dr. Weinreich agreed: “This is not a substitute for a vaccine except for the small group who get the vaccine and their bodies can’t respond to it because they’re significantly immunocompromised.”

The results from this paper “are one piece of a large, multistudy, phase 3 program that basically spans from prophylaxis all the way to hospitalization and pretty much the gamut – all of them – have worked. All of these studies have shown dramatic improvement in whatever the definitive regulatory endpoint is,” Dr. Weinreich said.

He said discussions are ongoing for full regulatory approval in the United States and for expanding the EUA for other populations, including pre-exposure prophylaxis, “which the [United Kingdom’s] authority has already granted us but the FDA has not.”

The study is funded by Regeneron and the Department of Health & Human Services. Dr. Weinreich is a vice president of Regeneron. Dr. Joshi reported no relevant financial relationships. Dr. Fales holds stock in Eli Lilly.

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

A monoclonal antibody combination of casirivimab and imdevimab (REGEN-COV) significantly reduced the risk of COVID-19–related hospitalizations and death from any cause in the phase 3 portion of an adaptive trial of outpatients.

Researchers, led by David Weinreich, MD, MBA, executive vice president of the drug cocktail’s manufacturer Regeneron, found in the randomized trial that the combination also resolved symptoms and reduced the SARS-CoV-2 viral load more quickly, compared with placebo.

Findings were published in the New England Journal of Medicine. 

COVID-related hospitalization or death from any cause occurred in 18 of 1,355 patients (1.3%) in the group getting 2,400 mg infusions of the study drug, compared with 62 (4.6%) of 1,341 in the matching placebo group, indicating a relative risk reduction of 71.3%; P < .001.

Sunil Joshi, MD, president of the Duval County Medical Society Foundation and an immunologist in Jacksonville, Fla., said in an interview that these findings confirm benefits of REGEN-COV and are very good news for a patient group that includes those age 65 and older with high blood pressure, diabetes, or obesity; and for people not vaccinated, who are all at high risk of hospitalization or death if they get COVID-19.

“Vaccines are critically important,” he said, “but if you were to be infected and know that there’s a way to keep yourself out of the hospital, this is very good news.”
 

Researchers seek lowest doses

This trial found that the effect was similar when researchers cut the doses in half. These outcomes occurred in 7 of 736 (1%) of patients given 1,200 mg of REGEN-COV and in 24 (3.2%) of 748 in the matching placebo group (relative risk reduction, 70.4%; P = .002).

Symptoms were resolved on average 4 days earlier with each REGEN-COV dose than with placebo (10 days vs. 14 days; P < .001 for both comparisons).

Dr. Weinreich said in an interview that trials will continue to find the lowest effective doses that can stand up to all evolving variants.

“This is one of those settings where you don’t want to underdose. You’ve got one shot at this,” he said. “We’d love to do lower doses. It would be more convenient and we could treat more patients, but if it generates more clinical failures or doesn’t work with certain variants, then you’ve done a huge disservice to the world.”

Also new in this study is that researchers tested not only seronegative patients, but patients at high risk regardless of blood antibody status, he said.

“It’s the first suggestion of data that if you’re breaking through a vaccine and you’re at high risk, the use of the cocktail is something to strongly consider because treatment early is better than treatment later,” Dr. Weinreich said.

In addition to efficacy, the phase 3 trial demonstrated the cocktail had a good safety profile. Serious adverse events occurred more often in the placebo group (4%) than in the 1,200-mg group (1.1%) and the 2,400-mg group (1.3%). Infusion reactions (grade 2 or higher) occurred in less than 0.3% of patients in all groups. 

William Fales, MD, state medical director for the Michigan Department of Health and Human Services, said the results confirm the promise of REGEN-COV for reducing hospitalizations and death in a peer-reviewed publication.
 

COVID-19 a moving target

However, Dr. Fales noted that COVID-19 is a moving target with emerging variants. The criteria for populations at high risk have also broadened since the start of the study, he said.

“A great example is pregnancy is now included as high risk, and that would have likely been a specific contraindication of patients in this clinical trial,” he said.

Dr. Fales said Michigan has been using both REGEN-COV and the Eli Lilly combination of bamlanivimab and etesevimab, which also has an emergency use authorization (EUA) from the Food and Drug Administration, with positive results.

REGEN-COV has an EUA to treat people who are at high risk of serious consequences from COVID-19, including those who are already infected (nonhospitalized) or those in certain postexposure prophylaxis settings.

“We’re seeing very low hospitalization rates and few deaths in a state that is predominately Delta,” Dr. Fales said. “So, this makes us feel that we’re doing the right thing and supports the current efforts around the country to make monoclonal antibody therapy available to high-risk patients.”  

Dr. Joshi noted that trial results have been emerging from other monoclonal antibody cocktails with different COVID-19 patient groups.

However, he said in an interview, “how much more effective they would be than this is something we’d have to look at, as 71% effectiveness in keeping people out of the hospital is pretty good for any treatment.”

“These are great numbers, but vaccination itself keeps you from getting the disease in the first place and not just for a short time period. This treatment is just that – a treatment. It gets you through that episode but it doesn’t mean you won’t get sick again. You don’t develop an immune response as you do with the vaccine,” he said.

Dr. Weinreich agreed: “This is not a substitute for a vaccine except for the small group who get the vaccine and their bodies can’t respond to it because they’re significantly immunocompromised.”

The results from this paper “are one piece of a large, multistudy, phase 3 program that basically spans from prophylaxis all the way to hospitalization and pretty much the gamut – all of them – have worked. All of these studies have shown dramatic improvement in whatever the definitive regulatory endpoint is,” Dr. Weinreich said.

He said discussions are ongoing for full regulatory approval in the United States and for expanding the EUA for other populations, including pre-exposure prophylaxis, “which the [United Kingdom’s] authority has already granted us but the FDA has not.”

The study is funded by Regeneron and the Department of Health & Human Services. Dr. Weinreich is a vice president of Regeneron. Dr. Joshi reported no relevant financial relationships. Dr. Fales holds stock in Eli Lilly.

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

A monoclonal antibody combination of casirivimab and imdevimab (REGEN-COV) significantly reduced the risk of COVID-19–related hospitalizations and death from any cause in the phase 3 portion of an adaptive trial of outpatients.

Researchers, led by David Weinreich, MD, MBA, executive vice president of the drug cocktail’s manufacturer Regeneron, found in the randomized trial that the combination also resolved symptoms and reduced the SARS-CoV-2 viral load more quickly, compared with placebo.

Findings were published in the New England Journal of Medicine. 

COVID-related hospitalization or death from any cause occurred in 18 of 1,355 patients (1.3%) in the group getting 2,400 mg infusions of the study drug, compared with 62 (4.6%) of 1,341 in the matching placebo group, indicating a relative risk reduction of 71.3%; P < .001.

Sunil Joshi, MD, president of the Duval County Medical Society Foundation and an immunologist in Jacksonville, Fla., said in an interview that these findings confirm benefits of REGEN-COV and are very good news for a patient group that includes those age 65 and older with high blood pressure, diabetes, or obesity; and for people not vaccinated, who are all at high risk of hospitalization or death if they get COVID-19.

“Vaccines are critically important,” he said, “but if you were to be infected and know that there’s a way to keep yourself out of the hospital, this is very good news.”
 

Researchers seek lowest doses

This trial found that the effect was similar when researchers cut the doses in half. These outcomes occurred in 7 of 736 (1%) of patients given 1,200 mg of REGEN-COV and in 24 (3.2%) of 748 in the matching placebo group (relative risk reduction, 70.4%; P = .002).

Symptoms were resolved on average 4 days earlier with each REGEN-COV dose than with placebo (10 days vs. 14 days; P < .001 for both comparisons).

Dr. Weinreich said in an interview that trials will continue to find the lowest effective doses that can stand up to all evolving variants.

“This is one of those settings where you don’t want to underdose. You’ve got one shot at this,” he said. “We’d love to do lower doses. It would be more convenient and we could treat more patients, but if it generates more clinical failures or doesn’t work with certain variants, then you’ve done a huge disservice to the world.”

Also new in this study is that researchers tested not only seronegative patients, but patients at high risk regardless of blood antibody status, he said.

“It’s the first suggestion of data that if you’re breaking through a vaccine and you’re at high risk, the use of the cocktail is something to strongly consider because treatment early is better than treatment later,” Dr. Weinreich said.

In addition to efficacy, the phase 3 trial demonstrated the cocktail had a good safety profile. Serious adverse events occurred more often in the placebo group (4%) than in the 1,200-mg group (1.1%) and the 2,400-mg group (1.3%). Infusion reactions (grade 2 or higher) occurred in less than 0.3% of patients in all groups. 

William Fales, MD, state medical director for the Michigan Department of Health and Human Services, said the results confirm the promise of REGEN-COV for reducing hospitalizations and death in a peer-reviewed publication.
 

COVID-19 a moving target

However, Dr. Fales noted that COVID-19 is a moving target with emerging variants. The criteria for populations at high risk have also broadened since the start of the study, he said.

“A great example is pregnancy is now included as high risk, and that would have likely been a specific contraindication of patients in this clinical trial,” he said.

Dr. Fales said Michigan has been using both REGEN-COV and the Eli Lilly combination of bamlanivimab and etesevimab, which also has an emergency use authorization (EUA) from the Food and Drug Administration, with positive results.

REGEN-COV has an EUA to treat people who are at high risk of serious consequences from COVID-19, including those who are already infected (nonhospitalized) or those in certain postexposure prophylaxis settings.

“We’re seeing very low hospitalization rates and few deaths in a state that is predominately Delta,” Dr. Fales said. “So, this makes us feel that we’re doing the right thing and supports the current efforts around the country to make monoclonal antibody therapy available to high-risk patients.”  

Dr. Joshi noted that trial results have been emerging from other monoclonal antibody cocktails with different COVID-19 patient groups.

However, he said in an interview, “how much more effective they would be than this is something we’d have to look at, as 71% effectiveness in keeping people out of the hospital is pretty good for any treatment.”

“These are great numbers, but vaccination itself keeps you from getting the disease in the first place and not just for a short time period. This treatment is just that – a treatment. It gets you through that episode but it doesn’t mean you won’t get sick again. You don’t develop an immune response as you do with the vaccine,” he said.

Dr. Weinreich agreed: “This is not a substitute for a vaccine except for the small group who get the vaccine and their bodies can’t respond to it because they’re significantly immunocompromised.”

The results from this paper “are one piece of a large, multistudy, phase 3 program that basically spans from prophylaxis all the way to hospitalization and pretty much the gamut – all of them – have worked. All of these studies have shown dramatic improvement in whatever the definitive regulatory endpoint is,” Dr. Weinreich said.

He said discussions are ongoing for full regulatory approval in the United States and for expanding the EUA for other populations, including pre-exposure prophylaxis, “which the [United Kingdom’s] authority has already granted us but the FDA has not.”

The study is funded by Regeneron and the Department of Health & Human Services. Dr. Weinreich is a vice president of Regeneron. Dr. Joshi reported no relevant financial relationships. Dr. Fales holds stock in Eli Lilly.

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

With the Delta variant of COVID-19 still raging in the United States and ICUs in parts of the country filled with patients with the coronavirus, experts are voicing concern about the added risk of a difficult flu season.

Two mathematical models are predicting a big rebound in the number and severity of flu cases in the 2021-22 season after 2020-2021’s flu season failed to show up when public health measures brought in to control COVID-19 seemed to have the added benefit of stopping the flu.

But both analyses, posted to the medRxiv preprint server and not yet peer reviewed by other experts, have come to the same conclusion: The flu could make a comeback this year.

In the worst-case scenario, the United States could see an extra 300,000-400,000 hospitalizations from the flu – almost double the usual number – according to senior study author Mark Roberts, MD, director of the Public Health Dynamics Laboratory at the University of Pittsburgh. These numbers could be a disaster in areas where hospitals are already filled with COVID-19 patients.

Waning natural immunity in the public because of 2020-2021’s missing flu season could make people, especially young children, more likely to get the virus.

“Usually, a combination of natural immunity and vaccination helps tamp down seasonal influenza,” said Dr. Roberts. “If we don’t have the first part, we’ll have to rely more on the vaccine.”

In a typical year, about half of Americans get the flu shot. The new mathematical models predict that the vaccination rate would need to rise to about 75% to avoid the extra hospitalizations. But even a 10% increase in vaccination rates could reduce hospitalizations by 6%-46%, depending on what strains are dominant.

Usually, the Southern Hemisphere flu season, from February to August, helps show what the Northern Hemisphere can expect over the coming winter. But with strict COVID-19 measures and limits on international travel still in place in countries like Australia and New Zealand and much of South America, it has been another record-low year for flu infections, said Ian Barr, PhD, deputy director of the World Health Organization’s Collaborating Center for Reference and Research on Influenza in Melbourne.

Australia detected only around 500 cases in 2021, compared with about 300,000 in a normal year, and recorded no hospitalizations or deaths from the flu. New Zealand recorded just two cases.

“I’ve never seen anything like this,” Dr. Barr said.

In Australia, the mild flu season led to fewer people getting their flu shot than usual. The rate fell from around 50% to just 33%, said Dr. Barr. “If that happens in the U.S., the population will be even more vulnerable because there has been almost no flu for more than 12 months,” he said.

Both Dr. Roberts and Dr. Barr say it is vital that as many people as possible get vaccinated during the upcoming flu season, especially children who will have almost no natural immunity to the virus.

“The vaccine is our best weapon against the flu, especially for the most at-risk groups,” said Dr. Barr.

Other parts of the world had mixed results. India saw a high number of flu cases, while neighboring Sri Lanka had very few. West Africa also saw quite a high level of circulating virus. Overall, the flu was detected in 45 countries during the Southern Hemisphere season, less than half of what might be expected in a normal year, said Dr. Barr.

Despite the overall low numbers, the WHO saw enough in the data to make two changes to 2022’s Southern Hemisphere vaccine formulation at its meeting on Sept. 24, after changing just one of the strains for the Northern Hemisphere vaccine at its meeting in February.

The CDC recommends that everyone 6 months or older get the flu shot, with few exceptions.

A version of this article first appeared on WebMD.com.

With the Delta variant of COVID-19 still raging in the United States and ICUs in parts of the country filled with patients with the coronavirus, experts are voicing concern about the added risk of a difficult flu season.

Two mathematical models are predicting a big rebound in the number and severity of flu cases in the 2021-22 season after 2020-2021’s flu season failed to show up when public health measures brought in to control COVID-19 seemed to have the added benefit of stopping the flu.

But both analyses, posted to the medRxiv preprint server and not yet peer reviewed by other experts, have come to the same conclusion: The flu could make a comeback this year.

In the worst-case scenario, the United States could see an extra 300,000-400,000 hospitalizations from the flu – almost double the usual number – according to senior study author Mark Roberts, MD, director of the Public Health Dynamics Laboratory at the University of Pittsburgh. These numbers could be a disaster in areas where hospitals are already filled with COVID-19 patients.

Waning natural immunity in the public because of 2020-2021’s missing flu season could make people, especially young children, more likely to get the virus.

“Usually, a combination of natural immunity and vaccination helps tamp down seasonal influenza,” said Dr. Roberts. “If we don’t have the first part, we’ll have to rely more on the vaccine.”

In a typical year, about half of Americans get the flu shot. The new mathematical models predict that the vaccination rate would need to rise to about 75% to avoid the extra hospitalizations. But even a 10% increase in vaccination rates could reduce hospitalizations by 6%-46%, depending on what strains are dominant.

Usually, the Southern Hemisphere flu season, from February to August, helps show what the Northern Hemisphere can expect over the coming winter. But with strict COVID-19 measures and limits on international travel still in place in countries like Australia and New Zealand and much of South America, it has been another record-low year for flu infections, said Ian Barr, PhD, deputy director of the World Health Organization’s Collaborating Center for Reference and Research on Influenza in Melbourne.

Australia detected only around 500 cases in 2021, compared with about 300,000 in a normal year, and recorded no hospitalizations or deaths from the flu. New Zealand recorded just two cases.

“I’ve never seen anything like this,” Dr. Barr said.

In Australia, the mild flu season led to fewer people getting their flu shot than usual. The rate fell from around 50% to just 33%, said Dr. Barr. “If that happens in the U.S., the population will be even more vulnerable because there has been almost no flu for more than 12 months,” he said.

Both Dr. Roberts and Dr. Barr say it is vital that as many people as possible get vaccinated during the upcoming flu season, especially children who will have almost no natural immunity to the virus.

“The vaccine is our best weapon against the flu, especially for the most at-risk groups,” said Dr. Barr.

Other parts of the world had mixed results. India saw a high number of flu cases, while neighboring Sri Lanka had very few. West Africa also saw quite a high level of circulating virus. Overall, the flu was detected in 45 countries during the Southern Hemisphere season, less than half of what might be expected in a normal year, said Dr. Barr.

Despite the overall low numbers, the WHO saw enough in the data to make two changes to 2022’s Southern Hemisphere vaccine formulation at its meeting on Sept. 24, after changing just one of the strains for the Northern Hemisphere vaccine at its meeting in February.

The CDC recommends that everyone 6 months or older get the flu shot, with few exceptions.

A version of this article first appeared on WebMD.com.

With the Delta variant of COVID-19 still raging in the United States and ICUs in parts of the country filled with patients with the coronavirus, experts are voicing concern about the added risk of a difficult flu season.

Two mathematical models are predicting a big rebound in the number and severity of flu cases in the 2021-22 season after 2020-2021’s flu season failed to show up when public health measures brought in to control COVID-19 seemed to have the added benefit of stopping the flu.

But both analyses, posted to the medRxiv preprint server and not yet peer reviewed by other experts, have come to the same conclusion: The flu could make a comeback this year.

In the worst-case scenario, the United States could see an extra 300,000-400,000 hospitalizations from the flu – almost double the usual number – according to senior study author Mark Roberts, MD, director of the Public Health Dynamics Laboratory at the University of Pittsburgh. These numbers could be a disaster in areas where hospitals are already filled with COVID-19 patients.

Waning natural immunity in the public because of 2020-2021’s missing flu season could make people, especially young children, more likely to get the virus.

“Usually, a combination of natural immunity and vaccination helps tamp down seasonal influenza,” said Dr. Roberts. “If we don’t have the first part, we’ll have to rely more on the vaccine.”

In a typical year, about half of Americans get the flu shot. The new mathematical models predict that the vaccination rate would need to rise to about 75% to avoid the extra hospitalizations. But even a 10% increase in vaccination rates could reduce hospitalizations by 6%-46%, depending on what strains are dominant.

Usually, the Southern Hemisphere flu season, from February to August, helps show what the Northern Hemisphere can expect over the coming winter. But with strict COVID-19 measures and limits on international travel still in place in countries like Australia and New Zealand and much of South America, it has been another record-low year for flu infections, said Ian Barr, PhD, deputy director of the World Health Organization’s Collaborating Center for Reference and Research on Influenza in Melbourne.

Australia detected only around 500 cases in 2021, compared with about 300,000 in a normal year, and recorded no hospitalizations or deaths from the flu. New Zealand recorded just two cases.

“I’ve never seen anything like this,” Dr. Barr said.

In Australia, the mild flu season led to fewer people getting their flu shot than usual. The rate fell from around 50% to just 33%, said Dr. Barr. “If that happens in the U.S., the population will be even more vulnerable because there has been almost no flu for more than 12 months,” he said.

Both Dr. Roberts and Dr. Barr say it is vital that as many people as possible get vaccinated during the upcoming flu season, especially children who will have almost no natural immunity to the virus.

“The vaccine is our best weapon against the flu, especially for the most at-risk groups,” said Dr. Barr.

Other parts of the world had mixed results. India saw a high number of flu cases, while neighboring Sri Lanka had very few. West Africa also saw quite a high level of circulating virus. Overall, the flu was detected in 45 countries during the Southern Hemisphere season, less than half of what might be expected in a normal year, said Dr. Barr.

Despite the overall low numbers, the WHO saw enough in the data to make two changes to 2022’s Southern Hemisphere vaccine formulation at its meeting on Sept. 24, after changing just one of the strains for the Northern Hemisphere vaccine at its meeting in February.

The CDC recommends that everyone 6 months or older get the flu shot, with few exceptions.

A version of this article first appeared on WebMD.com.