A U.S. Food and Drug Administration committee on Thursday recommended the updated Omicron formula be used for initial doses of the COVID vaccine—this amid discussion of a controversial dosing regimen that could shift to just one booster shot a year for many Americans.
The Vaccines and Related Biological Products Advisory Committee voted unanimously to replace the original monovalent formula, protective against the initial Wuhan strain, with the bivalent formula, which protects against both the Wuhan strain and Omicron BA.4 and BA.5, for those receiving their initial shots.
