Pfizer says COVID booster offers protection against omicron
Pfizer says a booster dose of its COVID-19 vaccine appears to offer important protection against the new omicron variant. Pfizer and its partner BioNTech tested how well vaccine-pr…
Pfizer says a booster dose of its COVID-19 vaccine appears to offer important protection against the new omicron variant. Pfizer and its partner BioNTech tested how well vaccine-pr…