FDA Authorizes Bivalent COVID-19 Boosters Targeting Omicron

FDA authorizes updated bivalent boosters from Pfizer/BioNTech and Moderna that target both the ancestral SARS-CoV-2 strain and Omicron BA.4/BA.5 subvariants. These become the recommended booster dose for eligible Americans. The annual update model mirrors influenza vaccine strategy.