Robert F. Kennedy Jr. is doubling down on his false claims about the MMR vaccine — which protects against measles, mumps, and ...

The Department of Health and Human Services says it will require new vaccines to be tested against a placebo, which could ...

Measles cases in the United States climbed to 939 in 29 states, the Centers for Disease Control and Prevention said Friday.

The health secretary has been promoting vitamin A and other unproven treatments for a disease that is highly preventable with a vaccine.