Moderna on Thursday (June 10) asked FDA to expand emergency use authorization for its COVID-19 vaccine to kids ages 12 to 17 after the two-dose mRNA vaccine was found to be 100% effective in teens. The vaccine is already authorized for use in adults ages 18 and up. If cleared for use in 12- to 17-year-olds, Moderna’s two-shot product would be the second COVID-19 vaccine authorized for teens in the United States. FDA has already authorized Pfizer’s COVID-19 vaccine for...