North America has three other large outbreaks. The longest, in Ontario, Canada, has resulted in 2,276 cases from mid-October ...

The U.S. is having its worst year for measles spread since 1991, with a total of 1,288 cases nationally and another six months to go. But in Gaines County, Texas, which was once the nation’s epicenter ...

Arizona has four cases in Navajo County. They are linked to a single source, the county health department said June 9. All four were unvaccinated and had a history of recent international travel.

The U.S. is having its worst year for measles spread since 1991, with a total of 1,288 cases nationally and another six months to go. But in Gaines County, ...

Health officials in Colorado say the state's measles outbreak is over, and the U.S. added just 10 confirmed cases nationally in the last week. Wednesday's national case count stood at 1,319 ...

The U.S. is having its worst year for measles spread since 1991, with a total of 1,288 cases nationally and another six months to go. But in Gaines County, Texas, which was once the nation’s ...