12 former FDA chiefs unite to say agency memo on vaccines is deeply stupid
On Friday, VinayΒ Prasadβthe Food and Drug Administrationβs chief medical and scientific officer and its top vaccine regulatorβemailed a stunning memo to staff that quickly leaked to the press. Without evidence, Prasad claimed COVID-19 vaccines have killed 10 children in the US, and, as such, he announced unilateral, sweeping changes to the way the agency regulates and approves vaccines, including seasonal flu shots.
On Wednesday evening, a dozen former FDA commissioners, who collectively oversaw the agency for more than 35 years, responded to the memo with a scathing rebuke. Uniting to publish their response in the New England Journal of Medicine, the former commissioners said they were βdeeply concernedβ by Prasadβs memo, which they framed as a βthreatβ to the FDAβs work and a danger to Americansβ health.
In his memo, Prasad called for abandoning the FDAβs current framework for updating seasonal flu shots and other vaccines, such as those for COVID-19. Those updates currently involve studies that measure well-characterized immune responses (called immunobridging studies). Prasad dismissed this approach as insufficient and, instead, plans to require expensive randomized trials, which can take months to years for each vaccine update.


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