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Measles has seen a resurgence in the United States in 2025, with significant outbreaks reported, particularly in Texas and New Mexico. As of June 3, 2025, the Johns Hopkins Bloomberg School of Public Health’s U.S. Measles Tracker reported there were 1,151 confirmed cases of measles in the United States. Most cases are among unvaccinated children and adolescents, and there have been multiple deaths associated with the outbreaks. The majority of outbreaks have occurred in close-knit communities with low vaccination coverage, and frequent travel among these communities has facilitated the spread of the virus. Despite these outbreaks, the overall risk for widespread measles transmission in the United States remains low due to generally high immunization rates and robust public health response systems.