The U.S. has 1,001 measles cases and 11 states with outbreaks: Where the virus is spreading

As the measles outbreak in West Texas slows, other states are reporting multiple cases in communities with low vaccination rates.

The U.S. surpassed 1,000 measles cases Friday, even as Texas posted one of its lowest counts of newly confirmed cases since its large outbreak began three months ago.

Texas still accounts for the vast majority of cases in the U.S., with 709 confirmed as of Friday in an outbreak that also spread measles to New Mexico, Oklahoma and Kansas. Two unvaccinated elementary school-aged children died from measles-related illnesses in the epicenter in West Texas, and an adult in New Mexico who was not vaccinated died of a measles-related illness.

Other states with active outbreaks — which the CDC defines as three or more related cases — include Indiana, Michigan, Montana, Ohio, Pennsylvania and Tennessee.

North America has two other ongoing outbreaks, all of which are the same measles strain. One outbreak in Ontario, Canada, has resulted in 1,440 cases from mid-October through May 6, up 197 cases in a week. And the Mexican state of Chihuahua had 1,041 measles cases and one death as of Friday, according to data from the state health ministry.

Measles is caused by a highly contagious virus that’s airborne and spreads easily when an infected person breathes, sneezes or coughs. It is preventable through vaccines, and has been considered eliminated from the U.S. since 2000.