The first mRNA-based flu shot to be approved by the Food and Drug Administration will be ready for the upcoming flu season. Moderna, the vaccine's maker

The first mRNA-based flu shot to be approved by the Food and Drug Administration will be ready for the upcoming flu season. Moderna, the vaccine's maker

The approval of Moderna’s new flu vaccine comes months after the FDA faced backlash for refusing to review the shot.

The vaccine, developed by Moderna, is approved for adults ages 50 to 64 and those 65 and older, who face the highest risk of severe illness.