Two doses of Pfizer-BioNTech vaccine are highly effective against COVID-19 hospitalizations for at least six months
Two doses of Pfizer-BioNTech (BNT162b2) are 90% effective against COVID-19 hospitalizations for all variants, including delta, for at least six months, confirms a new study from Kaiser Permanente and Pfizer published in The ...
Oct 5, 2021
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