By Paul A. Offit, M.D. On December 10, 2020, Pfizer presented results from a 36,000-person, two-dose, prospective, placebo-controlled trial of its Covid-19 messenger RNA (mRNA) vaccine, BNT162b2, to the Food and Drug Administration (FDA).1 The vaccine was 95%...
Covid-19 Boosters — Where from Here?
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