There have been 301 confirmed cases of measles across the U.S. so far this year, surpassing the 2024 total of 285, according to the latest data from the Centers for Disease Control and Prevention. As of March 13, cases have been confirmed in 14 states, whereas last year cases were confirmed in 31 states and Washington, D.C.

The CDC said 93% of 2025 cases are outbreak-associated. The vaccination status of 95% of this year’s cases is classified as “unvaccinated or unknown.”

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An outbreak of measles in Utah has grown to 663 cases, the state’s Department of Health and Human Resources reported May 12. There have been 466 cases…
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The measles outbreak in Utah that began in June 2025 has grown to 638 cases as of May 5, according to the state’s Department of Health and Human Services. Of…
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A measles outbreak that reached 997 cases in South Carolina has been declared over, as the 42-day threshold with no new reported cases was reached April 26.…
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The Utah measles outbreak has increased to 607 cases, the state’s Department of Health and Human Services reported April 24. Nationwide, there have been 1,792…
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There are now 602 cases in the Utah measles outbreak, the state’s Department of Health and Human Services reported April 14. Of those, 405 cases have been…
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The Utah measles outbreak has increased to 583 cases, the state’s Department of Health and Human Services reported April 7. Of those, 386 cases have been…