COVID-19: 4,400 adverse events reported after receiving Pfizer, BioNTech vaccine in US
Among those, 175 case reports were identified for further review as possible cases of severe allergic reaction, including anaphylaxis.;
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Washington: Nearly 4,400 adverse events were reported after people received the Pfizer-BioNTech Covid-19 vaccine in the US, with 21 cases determined to be anaphylaxis, according to a report by the Centers for Disease Control and Prevention (CDC).
The US Food and Drug Administration issued an Emergency Use Authorization for Pfizer-BioNTech Covid-19 vaccine on December 11, 2020, administered as two doses separated by 21 days, reports Xinhua news agency.
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