boosters

ImageKeidy Ventura, 17, received her first dose of the Pfizer-BioNTech vaccine in West New York, N.J., in April.Credit...Seth Wenig/Associated PressPfizer and BioNTech are expected this week to apply for regulatory approval for a booster…

Here’s what you need to know:ImageRosie Manzo, left, watching as her brother, Esteban, 15, got the Pfizer vaccine at a mobile clinic in Santa Ana, Calif., in August.Credit...Jae C. Hong/Associated PressA surge driven by the Delta variant…

MADISON, Wisconsin (AP) - With more than 40 million doses of coronavirus vaccines available, U.S. health officials are confident it awaits for their first vaccines for both qualified older Americans seeking a booster and young…