Pfizer-BioNTech’s vaccine is highly effective against hospitalization for those 12 to 18, a study shows.

The Pfizer-BioNTech vaccine was 93 percent effective against hospitalization with Covid-19 among 12- to 18-year-olds, the Centers for Disease Control and Prevention reported on Tuesday, the strongest evidence to date of the vaccine’s ability to keep young people out of the hospital.