An FDA advisory committee unanimously recommended Thursday that the next COVID vaccine should be a monovalent one in the JN.1 lineage, although members disagreed slightly about which specific strain should be included.

Complicating matters, however, were new FDA rules for the updated Covid vaccines, announced just days earlier, that would restrict access of the shots to only the most at-risk Ame

The updated warnings highlight a rare risk of heart inflammation in teen boys and young men, CBS News reported. The warning applies to males ages 16 to 25 and is based on new data from FDA safety monitoring and a 2023 study. This includes both Pfizer's Comirnaty and Moderna's Spikevax vaccines.