> "The public can be assured that a great deal of care has been taken by the FDA to ensure that these bivalent Covid-19 vaccines meet our rigorous safety, effectiveness and manufacturing quality standards for emergency use authorization," Dr. Peter Marks, the agency's top vaccine regulator, said in a statement.
Are there safety/efficacy studies someone is aware of and can link?
Flu shots don't get a full set of studies every year; there's ongoing monitoring for safety events, but tweaking the strains each time is an expedited process. That's the right model for COVID boosters, I'd say.
They've shared data with regulators; not sure if it's published yet.
> This clinical data adds to results shared last month from Moderna’s ongoing phase 2/3 study in approximately 800 participants. Previous results showed a 50-µg booster dose of mRNA-1273.214 met all pre-specified primary end points. The booster does was generally well tolerated by patients, with a reactogenicity and safety profile considered consistent with the currently authorized booster.
It could be taken as motivation for updating the booster so don't get me wrong, but is it possible the flu vaccine schedule is problematic if some years we can expect negative efficacy?
Possible, but unpredictable; it would appear it depends on which strains are active each year, which we can’t reliably predict. Different virus, too, so not necessarily applicable to COVID.
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[ 4.1 ms ] story [ 29.6 ms ] threadSource: https://usafacts.org/visualizations/covid-vaccine-tracker-st...
Are there safety/efficacy studies someone is aware of and can link?
They've shared data with regulators; not sure if it's published yet.
https://www.pharmacytimes.com/view/moderna-bivalent-booster-...
> This clinical data adds to results shared last month from Moderna’s ongoing phase 2/3 study in approximately 800 participants. Previous results showed a 50-µg booster dose of mRNA-1273.214 met all pre-specified primary end points. The booster does was generally well tolerated by patients, with a reactogenicity and safety profile considered consistent with the currently authorized booster.
https://www.cidrap.umn.edu/news-perspective/2017/02/studies-...
It could be taken as motivation for updating the booster so don't get me wrong, but is it possible the flu vaccine schedule is problematic if some years we can expect negative efficacy?
FDA Authorizes Moderna, Pfizer-BioNTech Bivalent COVID-19 Vaccines for Use as a Booster Dose : https://www.fda.gov/news-events/press-announcements/coronavi...