HOLMES

Montana has a measles outbreak with its first cases in 35 years. Here's what you should know

In North America, an outbreak in Ontario, Canada has sickened 925 from mid-October through April 16. That's on top of cases in Mexico that the World Health Organization has said are linked to the Texas outbreak. A large outbreak in Chihuahua state has 433 cases as of April 18, according to data from the state health ministry.