Majority of national measles cases were in Texas in early 2025

The West Texas outbreak recorded more than 760 confirmed cases in the state, the largest of more than 40 outbreaks reported in the U.S. in 2025.

Stacked area chart shows spike of cases associated with West Texas measles outbreak in March and April 2025. Weekly case counts in rest of U.S. remained elevated compared to 2024 totals.

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Note: Cases shown by week of rash onset as of Dec. 9. West Texas outbreak cases are only those reported in Texas.

Source: Texas Department of State Health Services, Centers for Disease Control and PreventionCredit: Dan Keemahill