Vax Protection Fades Fast Against BA.4/5-Related Hospitalizations
Vaccine protection against hospitalization from the latest Omicron subvariants deteriorates rapidly, even after a third dose, new data from South Africa indicated, suggesting that annual boosters might not cut it for high-risk people. With the primary two-dose series of Pfizer’s mRNA vaccine, effectiveness against BA.4/5-related hospitalization slipped from 47.4% after 3-4 months (95% CI 19.9-65.5) […]