According to the health department, most of the cases in New Mexico involve unvaccinated residents. Officials add the measles outbreak is not a rapidl

Amid the ongoing U.S. measles outbreak, get the breakdown of how many cases have been reported by state. The vast majority have been confirmed in West Texas.

The growing measles outbreak in the U.S. has infected more than 250 people and is on pace to exceed the number of total cases in the country last year. Why it matters: The outbreak comes at a time of dropping vaccination rates and declining trust in public health institutions.

Two people have died from measles as the U.S. faces outbreaks of the highly contagious virus. Can you get measles if you're vaccinated? Experts explain.