Other states with active outbreaks include Colorado, Kansas, Montana, New Mexico, North Dakota, Oklahoma, Ohio, and Tennessee ...

The number of measles cases in the U.S. so far this year has quadrupled compared to 2024 and is nearing a 30-year high. As of Friday, there have been 1,168 confirmed measles cases across 33 states ...

Measles is highly contagious, spreading rapidly among those without immunity. Montana DPHHS: “If somebody with measles walks ...