WASHINGTON, United States -- The United States on Wednesday authorized the use of boosters of Pfizer's COVID-19 vaccine for people aged over 65, people at high-risk of severe disease and those in high-exposure settings to the virus.

"Today's action demonstrates that science and the currently available data continue to guide the FDA’s decision-making for COVID-19 vaccines during this pandemic," said Janet Woodcock, acting head of the Food and Drug Administration.