FDA: COVID-19 Boosters Should Include Omicron BA.4, BA.5 Subvariants

FDA says COVID-19 vaccine makers should update their booster shots to include an Omicron BA.4 and BA.5 spike protein component that can be ready by early to mid-fall and can provide protection against circulating and emerging variants this fall and winter. Manufacturers do not need to update their primary series vaccines, the agency said in a Thursday (June 30) press release . Pfizer and BioNTech are working on two Omicron BA.1-adapted vaccine candidates that the companies say may also work...