FDA sounds skeptical note on Pfizer booster shot ahead of key vote


The Food and Drug Administration refrained from endorsing a Covid-19 booster shot from Pfizer and BioNTech in an analysis posted Wednesday ahead of a crucial advisory committee meeting.

The agency appeared skeptical about the companies’ assertion that an apparent drop in immune protection conferred by their Covid-19 vaccine is likely due to the passage of time, rather than the emergence of the hyper-contagious Delta variant.

Documents released ahead of the FDA vaccine advisory committee meeting Friday, which will focus on Pfizer’s booster application, show the companies

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