The FDA’s independent vaccine advisers unanimously voted Thursday to recommend that U.S. flu shot formulations for the next respiratory virus season mirror those embraced by the World Health ...

As the U.S. flu season winds down, health officials say the flu vaccine didn’t work very well, with one of its worst effectiveness rates in more than a decade. A new strain that dominated the early ...

Viral mismatch between circulating strains and vaccine may have weighed down effectiveness ...