The U.S. Food and Drug Administration (FDA) has authorized the use of a booster shot of Pfizer and BioNTech's COVID-19 vaccine for children aged 5 to 11, the regulator said on Tuesday.

The authorization makes everyone in the United States aged 5 and above eligible for booster doses of the vaccine, although the U.S. Centers for Disease Control and Prevention (CDC) still needs to sign off on the shots.