Effectiveness of Pfizer's COVID-19 Booster Shot May Drop from 85% to 55% After 3 Months https://t.co/7puxHjt4hP

Effectiveness of Pfizer's COVID-19 Booster Shot May Drop from 85% to 55% After 3 Months https://t.co/7puxHjt4hP

— Jas (@jas9) Apr 25, 2022