Covid-19 Live Updates: Variant First Seen in India Poses a Growing Threat
Covid-19 Live Updates: Moderna Says Its Vaccine Is Highly Effective in Adolescents The drugmaker announced that its Covid-19 vaccine was powerfully effective in 12- to 17-year-olds. It plans to apply for F.D.A. authorization. Here’s what you need to know: A teenager taking part in a Moderna vaccine trial in Houston in February.Credit...Brandon Thibodeaux for The New York Times Moderna said on Tuesday that its coronavirus vaccine, authorized only for use in adults, was powerfully effective in 12- to 17-year-olds, and that it planned to apply to the Food and Drug Administration in June for au...