A team of advisors met Wednesday to discuss boosters, but left with more questions.
on April 6, a panel of independent scientific advisors to the Food and Drug Administration , debated the details of a plan for using vaccines to head off future waves of COVID, whether caused by an Omicron-like variant, or waning immunity from previous shots at a population level.
The agency came with two central questions: How should the country decide how often to deliver boosters, and when would vaccine manufacturers needed to update their formulations for evolving variants? The goal, FDA officials said, was to develop a COVID vaccination strategy that would be both consistent and understandable to the general public after a year ofMuch of the discussion centered on comparisons to influenza, a virus that’s fought with a continually updated and distributed vaccine.
Another key difference is that influenza is a winter virus, while SARS-CoV-2 has yet to exhibit a clear seasonal pattern. Chris Murray, director of the Institute for Health Metrics and Evaluation, said in a presentation that he expects another winter wave of COVID. But that’s based on a combination of factors like waning antibodies and the virus’ steady mutation, not just cold weather.
to the elderly in January 2022. That extra dose made recipients roughly 3.5 times less likely to experience severe disease, and half as likely to catch the virus—at the time, mostly Omicron—at all. Still, after eight weeks, recipients lost their resistance to infections. The results, which were also published inthis week, suggest that while more boosters could shield the vulnerable, they’re not likely to be effective at containing COVID spread.
Brasil Últimas Notícias, Brasil Manchetes
Similar News:Você também pode ler notícias semelhantes a esta que coletamos de outras fontes de notícias.
Covid-19: Four Covid-related deaths and 530 in hospitalThe total number of deaths linked to Covid-19 in NI since the start of the pandemic is 3,346.
Consulte Mais informação »
Covid jabs: Why families are taking their children for a Covid vaccineChildren having the vaccination in Derby say the experience made their worries go.
Consulte Mais informação »
Covid-19: Two Covid-related deaths and 519 in hospitalThe total number of deaths linked to Covid-19 in NI since the start of the pandemic is 3,348.
Consulte Mais informação »
FDA to Decide by June on Future of COVID VaccinesThe next generation of COVID-19 vaccines should be able to fight off a new strain and be given each year, a panel of experts advising the FDA said Wednesday.
Consulte Mais informação »
Current COVID vaccines not 'well-matched' against BA.2 -FDAThe FDA, however, said booster shots protect against serious outcomes of COVID-19, compared with the two preliminary doses. U.S. health officials in late March authorized a second booster dose of Moderna and Pfizer's vaccines for people aged 50 and older, citing data showing waning immunity and risks posed by Omicron variants of the virus. 'This discussion today is a much larger discussion - it's a discussion for what do we do about the entire population, and what do we do when we think the virus has evolved further,' said Peter Marks, director of the FDA's Center for Biologics Evaluation and Research.
Consulte Mais informação »