Coronavirus: US data confirms Pfizer-BioNTech’s vaccine is strongly protective against Covid-19

Documents released by US regulators on Tuesday confirmed that Pfizer and BioNTech’s Covid-19 vaccine was strongly protective against the disease – offering the world’s first detailed look at the evidence behind the shots.The Food and Drug Administration posted its analysis online even as across the Atlantic, Britain on Tuesday began vaccinating its oldest citizens with the Pfizer-BioNTech shots.But the US judges experimental vaccines in a unique way: On Thursday, the FDA will convene what’s…

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