Loading ...Study Reveals ‘Dramatic’ Decline In All Three COVID-19 Vaccines’ Efficacy Over Time
Between early March and Septemper, as the Delta variant rapidly became the dominant strain worldwide, the ability of Moderna’s two-dose vaccine to prevent infections dropped from 89% – 58%, Pfizer’s went from 87% – 45%, and J&J’s single-dose vaccine went from 86% to just 13%.