Pfizer's Covid-19 vaccine found effective against UK, SA variants of SARS-CoV-2 virus, study reports in Firstpost Tech Latest News Gadgets News Latest Gadgets Technology News published on January 07, 2021 leave a reply via Firstpost Tech Latest News https://ift.tt/3orPCBh Tweet Share Share Share Share Previous Post Next Post post written by: Ashok.HindiGadgets360
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