Pfizer Vaccine Has 23% Efficacy Vs. Omicron in South African Lab Study

A two-shot course of Pfizer Inc.’s vaccine may have just 22.5% efficacy against symptomatic infection with the omicron variant, but can thwart severe disease, according to laboratory experiments in South Africa. Researchers at the Africa Health Research Institute in Durban issued additional data on a small study released earlier this week from which they made … Read more