• Efficacy of Pfizer/BioNTech Covid vaccine slips to 84% after six months, data show

    1 month ago - By STAT

    The efficacy of the Covid-19 vaccine developed by Pfizer and BioNTech fell from 96% to 84% over six months, according to data released Wednesday, a decline that could fuel Pfizer's case that a third dose will eventually be required.
    The data, released in a preprint that has not been reviewed by outside scientists, suggest the vaccine was 91% effective overall at preventing Covid-19 over the course of six months.
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  • Citing New Data, Pfizer Outlines Case for Booster Shots

    1 month ago - By New York Times

    Pfizer's coronavirus vaccine may become slightly weaker over time, the company reported. But experts said that most people won't need boosters anytime soon.
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