Michigan officials confirmed a new measles outbreak in the state, bringing the U.S. to seven states with active outbreaks.

Public health officials across Arizona are on high alert as the CDC reports more than 700 cases of measles this year, spreading to 24 states.

Canada has reported more than 730 cases this year, making this one of the worst measles outbreaks in the country since it ...

Measles continues to spread in Michigan and across the U.S., prompting questions about the disease and how to prevent it.

Before the vaccine, the virus spread in a world very different from today’s.

Measles cases have surpassed 650 in an ongoing multistate outbreak, but federal funding cuts could threaten the response.

As measles cases in West Texas are still on the rise two months after the outbreak began, local public health officials say they expect the virus to keep spreading for at least several more months ...