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.

The measles outbreak that began in the South Plain regions of Texas has swelled to more than 370 cases in three states.

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.