Measles Outbreak (2025/2026)

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From CDC: As of April 23, 2026, 1,792 confirmed* measles cases were reported in the United States in 2026. Among these, 1,782 measles cases were reported by 37 jurisdictions: Alaska, Arizona, California, Colorado, Florida, Georgia, Idaho, Illinois, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Jersey, New Mexico, New York City, New York State, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Texas, Utah, Vermont, Virginia, Washington, and Wisconsin. A total of 10 measles cases were reported among international visitors to the United States.

There have been 22 new outbreaks** reported in 2026, and 93% of confirmed cases (1,668 of 1,792) are outbreak-associated (401 from outbreaks starting in 2026 and 1,267 from outbreaks that started in 2025).

There were 48 outbreaks** reported in 2025, and 90% of confirmed cases (2,063 of 2,285) were outbreak-associated. For comparison, 16 outbreaks were reported during 2024 and 69% of cases (198 of 285) were outbreak-associated.

*CDC is aware of probable measles cases being reported by jurisdictions. However, the data on this page only includes confirmed cases jurisdictions have notified to CDC.

**CDC reports the cumulative number of measles outbreaks (defined as 3 or more related cases) that have occurred this year in the U.S.; states have the most up-to-date information about cases and outbreaks in their jurisdictions.

A map of the United States showing confirmed measles cases. Explore the CDC Measles webpage.