Vaccination

FDA panel endorses booster shot for J&J COVID-19 vaccine

U.S. health advisers endorsed a booster of Johnson & Johnson's COVID-19 vaccine Friday, citing concern that Americans who got the single-dose shot aren't as protected as those given two-dose brands.

Vaccination

FDA panel takes up tough questions on J&J COVID-19 boosters

U.S. health advisers on Friday tackled who should get boosters of Johnson & Johnson's single-shot COVID-19 vaccine and when—and whether using a competing brand for the second dose might provide better protection.