Moderna says its Covid vaccine is 100% effective in teens, plans to seek FDA OK in early June

Moderna said Tuesday its Covid-19 vaccine was 100% effective in a study of adolescents ages 12 to 17, making it the second shot behind Pfizer’s to demonstrate high efficacy in younger age groups.

The company said it plans to ask the Food and Drug Administration to expand the emergency use of its Covid vaccine for teens early next month. If approved, it would likely dramatically expand the number of shots available to middle and high school students ahead of the next school year. Pfizer and German partner BioNTech were cleared to use their vaccine for 12- to 15-year-olds earlier this month.