The expected announcement came after an advisory panel voted in favor of including new variants in the formulation.
The announcement: FDA officially advises COVID vaccine manufacturers to “add an omicron BA.4/5 spike protein component to the current vaccine composition to create a two component (bivalent) booster vaccine, so that the modified vaccines can potentially be used starting in early to mid-fall 2022,” per yesterday’s announcement.
But the primary vaccination should remain the same for now, because “a primary series with the FDA-authorized and approved COVID-19 vaccines provides a base of protection against serious outcomes of COVID-19 caused by circulating strains of SARS-CoV-2.”
Companies are already working on boosters targeting these variants—including Pfizer, Moderna, and Novavax. Pfizer’s CEO stated on Sunday that the updated shots will be available for use as soon as they are authorized by the FDA.
The context: The Omicron subvariants BA.4 and BA.5 are dominant in the U.S., accounting for 52% of cases and expected to rise, according to the New York Times.