Shares of several biotech firms fell in premarket trading Monday after reports that ousted U.S. Food and Drug Administration vaccine regulator Vinay Prasad will return to the agency.

Adams warns cutting funding for mRNA vaccine research will cost lives, derail medical progress, and give China an advantage.

Moderna announced July 10 that the FDA had fully approved its Spikevax COVID vaccine for kids ages 6 months through 11 years ...