Measles is the most contagious disease that we know. It spreads with unbelievable efficiency, in a nonimmune or a partially immune population,” says Dr. Adam Ratner, pediatric infectious disease ...

Secretary of Health and Human Services Robert F. Kennedy Jr.’s decision to fire the Centers for Disease Control and Prevention’s (CDC) entire vaccine board even as childhood vaccination ...

Measles, once declared eliminated in the U.S., has seen a resurgence, with recent cases linked to travelers passing through U.S. airports.