Longtime anti-vaccine critic Robert F. Kennedy was confirmed Tuesday as the new Secretary of Health and Human Services.

Here is what we know about polio as a disease, its vaccines and the likely number of lives saved through inoculation.

Flu infections are at or near their highest levels in at least 15 years and are still rising, the Centers for Disease Control ...

While flu viruses are detected year-round in the U.S., the virus activity usually peaks between December and February. Flu ...

This past fall, the Centers for Disease Control and Prevention changed the recommended age for getting the vaccine for pneumococcal ... or close contact. The CDC justified the revised ...