The Washington Post reports:
A highly-anticipated Food and Drug Administration review of evidence on whether a booster shot of the Pfizer-BioNTech coronavirus vaccine is widely necessary struck a noncommittal tone Wednesday, setting the stage for a potentially fractious debate among expert advisers to the agency this week. Pfizer and government officials have relied heavily on data from Israel in making the case to the public that boosters are necessary six months after full vaccination.
But FDA reviewers cautioned that a raft of studies with clear limitations have emerged in the last few months, pointing out that “biases can affect their reliability.” The reviewers stated that “US-based studies … may most accurately represent vaccine effectiveness.” Some studies have suggested the efficacy of the vaccines declines against symptomatic infections, but some have not, agency reviewers wrote.
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FDA review remains neutral on boosters ahead of critical Friday vote even as Pfizer pushes added shots https://t.co/fbwrHqHbnW
— The Washington Post (@washingtonpost) September 15, 2021