Pfizer Says COVID Booster Offers Protection Against Omicron
(AP) --- Pfizer said Wednesday that a booster of its COVID-19 vaccine may offer important protection against the new omicron variant even though the initial two doses appear signif…
(AP) --- Pfizer said Wednesday that a booster of its COVID-19 vaccine may offer important protection against the new omicron variant even though the initial two doses appear signif…