Two full doses of the Pfizer-BioNTech Covid-19 vaccine are not effective at all against the Omicron variant of the coronavirus, but a third booster shot helps, said Dr. Gili Regev-Yochay, […]
Two full doses of the Pfizer-BioNTech Covid-19 vaccine are not effective at all against the Omicron variant of the coronavirus, but a third booster shot helps, said Dr. Gili Regev-Yochay, […]
