US opens COVID boosters to all adults, urges them for 50+

A healthcare worker fills a syringe with the Pfizer COVID-19 vaccine on Oct. 5 at Jackson Memorial Hospital in Miami. (AP Photo/Lynne Sladky, File)

WASHINGTON — The U.S. on Friday opened COVID-19 booster shots to all adults and took the extra step of urging people 50 and older to seek one, aiming to ward off a winter surge as coronavirus cases rise even before millions of Americans travel for the holidays.