FDA Authorizes Updated COVID-19 Boosters Despite Lack of Clinical Data

A vial of Pfizer's COVID-19 vaccine in Seattle, Wash., on June 21, 2022. David Ryder/Getty Images

U.S. drug regulators on Aug. 31 authorized updated COVID-19 vaccine booster shots despite no clinical trial data being available for the modified formulations.

The U.S. Food and Drug Administration (FDA) granted emergency use authorization to Moderna and Pfizer for the updated boosters.