US rules out summer COVID boosters to focus on fall campaign

  • FILE - A vial of the Moderna COVID-19 vaccine is displayed on a counter at a pharmacy in Portland, Ore. on Dec. 27, 2021. The Biden administration said Friday it has reached an agreement to buy 66 million doses of Moderna’s next generation of COVID-19 vaccine that specifically targets the highly transmissible omicron variant, ensuring enough supply this winter for everyone who wants the upgraded booster. (AP Photo/Jenny Kane, File)

WASHINGTON — U.S. regulators said Friday they are no longer considering authorizing a second COVID-19 booster shot for all adults under 50 this summer, focusing instead on revamped vaccines for the fall that will target the newest viral subvariants.