Pfizer Says COVID Vaccine Safe Through Up To 6 Months After Second Dose
Pfizer Says COVID Vaccine Safe Through Up To 6 Months After Second Dose

Pfizer and BioNTech announced Thursday that their COVID-19 vaccine was 91.3% effective at protecting against symptomatic disease up to six months after the second dose, with no serious safety concerns, according to an updated analysis of clinical trial results.