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

Measles is highly contagious. It can lead to serious health problems. But it is preventable by the MMR vaccine.

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 ...

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 ...

Colorado has seen a total of 16 measles cases in 2025, which includes one outbreak of 10 related cases. The outbreak is linked to a Turkish Airlines flight that landed at Denver International ...