States race to use COVID-19 vaccines before they expire

A registered nurse gives James Mullen the second dose of the coronavirus vaccine at a COVID-19 vaccination site on Feb. 18 in New York. (AP Photo/Mary Altaffer, File)

Hundreds of thousands of COVID-19 vaccine doses have been saved from the trash after U.S. regulators extended their expiration date for a second time, part of a nationwide effort to salvage expiring shots to battle the nation’s summer surge in infections.