3rd COVID vaccine dose strongly boosts protection against Delta variant: Pfizer

American biopharmaceutical company Pfizer has said a third dose of its Covid-19 vaccine can "strongly" boost protection against the Delta variant.

American biopharmaceutical company Pfizer has said a third dose of its Covid-19 vaccine can "strongly" boost protection against the Delta variant. July 29, 2021 at 07:35AM https://ift.tt/3zMMTHL