The measles outbreak that began in west Texas in late January 2025 continues to grow, with 400 confirmed cases in Texas[1] and more than 50 in New Mexico[2] and Oklahoma[3] as of March 28.
Public health experts believe the numbers are much higher, however, and some worry about a bigger resurgence of the disease[4] in the U.S. In the past two weeks, health officials have identified potential measles exposures in association...