Pfizer which produces Covid-19 vaccine is a/an ……. pharmaceutical company? A) American B) British C) Russian D) Chinese Related MCQs: According to USA scientists, BCG vaccine is useful for the treatment of COVID-19.This vaccine primly against …..? Sinopharm covid vaccine belongs to which country? The AZD1222 Covid-19 vaccine has been developed by: Sputnik V Covid-19 vaccine belongs to which country?