(NEXSTAR) – A total of 800 measles cases across two dozen states have been confirmed, the Centers for Disease Control and Prevention says. As new cases pop up every week, at least 10 official ...

Here's a look at how a measles outbreak starts, as exposures at two Colorado schools lead to infections potentially spinning ...

Mumps was once a routine childhood illness in the United States before the US Food and Drug Administration approved the first vaccine in 1967 and vaccination dramatically reduced cases.

Health officials are raising alarms as a measles outbreak spreads across Northern California, with six confirmed cases ...