Pfizer asks FDA to OK COVID-19 booster shots for all adults

Vials of the Pfizer-BioNTech COVID-19 vaccine sit in a cooler before being thawed at a pop-up COVID-19 vaccination site in the Bronx borough of New York on Tuesday, Jan. 26, 2021. On Tuesday, Nov. 9, 2021, Pfizer asked U.S. regulators to allow boosters of its COVID-19 vaccine for anyone 18 or older, a step that comes amid concern about increased spread of the coronavirus with holiday travel and gatherings. (AP Photo/Mary Altaffer, File)