CDC Approves Updated Boosters Shots of COVID-19 Vaccine

Until now, COVID-19 vaccines have targeted the original SARS-CoV-2 virus, while both new U.S. boosters are combination, or “bivalent,” shots. They contain half the original vaccine formula and half protection against the newest omicron variants, BA.4 and BA.5, considered the most contagious yet. The updated boosters are only for people who have already completed their primary vaccination series using the original vaccines. Age eligibility requirements are different for each booster: