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  • Dec 14 2021

    by admin
    3 minutes, 17 seconds
    6214 0 0 0 0/5

    A new analysis released from South Africa suggests that two doses of the Pfizer-BioNTech coronavirus vaccine are considerably less effective in battling the Omicron variant than earlier strains.   The study, published by Discovery Health in partnership with the South African Medical Research Council...