Pfizer’s vaccine efficacy falls by 6pc every two months after the second dose though a third booster shot can restore protection up to 95pc, says a study by Pfizer.
Published in Dawn, The Business and Finance Weekly, October 4th, 2021
Pfizer’s vaccine efficacy falls by 6pc every two months after the second dose though a third booster shot can restore protection up to 95pc, says a study by Pfizer.
Published in Dawn, The Business and Finance Weekly, October 4th, 2021