Western Texas has become a breeding ground for cases of measles. Nearly all cases are suspected to be in unvaccinated individuals.

Measles cases in Texas and New Mexico rose to 370 on Tuesday, the health departments of the states said, an increase of 19 infections since their previous reports four days ago, as the United States deals with one of the largest measles outbreaks in the past decade.

A measles outbreak that began in Texas at the start of the year has infected nearly 330 people as of Tuesday, while cases of the highly contagious illness have been spotted Washington, D.C., and 17 states, exceeding the total number of measles cases reported in 2024.