Pfizer vaccine protects against COVID-19 strain predominant in India but is slightly less effective, finds study in Firstpost Tech Latest News Gadgets News Latest Gadgets Technology News published on May 30, 2021 leave a reply via Firstpost Tech Latest News https://ift.tt/3uBCiwv Tweet Share Share Share Share Previous Post Next Post post written by: Ashok.HindiGadgets360
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