Moderna's first mRNA flu vaccine is approved by the FDA

The FDA has approved Moderna's first mRNA-based seasonal flu vaccine for adults 50 and older. It's the first influenza vaccine to use the same messenger RNA technology that powered Moderna's COVID-19 vaccine. For more, KCBS Radio News anchor Margie Shafer spoke with Dr. Peter Chin Hong, infectious disease expert at UCSF. Getty Images / Dragon Claws