US expands use of Pfizer’s Covid-19 vaccine to include adolescents

US regulators have expanded the use of Pfizer’s Covid-19 vaccine to children as young as 12, offering a way to protect the nation’s adolescents before they head back to school in autumn (Robert F Bukaty/AP)

US regulators have expanded the use of Pfizer’s Covid-19 vaccine to children as young as 12, offering a way to protect the nation’s adolescents before they head back to school in autumn.

Shots could begin as soon as Thursday after a federal vaccine advisory committee issues recommendations for using the two-dose vaccine in 12- to 15-year-olds, with an announcement expected on Wednesday.