FDA plans to authorize bivalent boosters by Labor Day, sources say

The Food and Drug Administration plans to authorize updated versions of Pfizer-BioNTech’s and Moderna’s Covid boosters around Labor Day, said two people familiar with the discussions.

The Biden administration is preparing to distribute the updated booster shots to teenagers and adults as part of its fall booster campaign.

Both Pfizer’s and Moderna’s so-called bivalent vaccines target the BA.4 and BA.5 omicron subvariants, in addition to the original coronavirus strain in a single shot. BA.5 is responsible for nearly 90% of all new Covid cases in the U.S., according to data from the Centers for Disease Control and Prevention.

Pfizer is seeking authorization for people 12 and older, while Moderna is seeking authorization for all adults.

The FDA does not plan to convene its advisory panel, the Vaccines and Related Biological Products Advisory Committee, ahead of the authorization, one person said.

The FDA’s authorization will not be the final step before the shots can be distributed. The CDC must also sign off; the agency plans to convene its advisory panel, the Advisory Committee on Immunization Practices, on Sept. 1 and 2 to discuss Covid boosters, according to the agency.

The CDC’s director, Dr. Rochelle Walensky, could sign off on the updated boosters shortly after the two-day meeting. Vaccinations with the updated shots could begin as early as the day after the national holiday, one the people said.