A vaccinated adult from Denver County got the first confirmed breakthrough case of measles, the state health department announced April 25.

How to talk about vaccines with parents — or anyone — is taking on new urgency: At least 216 U.S. children died of flu this ...

Attorneys general in 19 states and Washington, D.C., are challenging cuts to the U.S. Health and Human Services agency. They ...

Local governments say their efforts to combat measles with vaccination clinics have been shut down by abrupt federal funding ...

More than a dozen data-gathering programs that track deaths and disease appear to have been eliminated in the tornado of ...