Measles Outbreak

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CDC Weekly Situational Report

From CDC: As of August 20, 2026, 2,777 confirmed* measles cases were reported in the United States in 2026. Among these, 2,761 measles cases were reported by 47 jurisdictions: Alabama, Alaska, Arizona, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, 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, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming. A total of 16 measles cases were reported among international visitors to the United States.

There have been 36 new outbreaks** reported in 2026, and 94% of confirmed cases (2,614 of 2,777) are outbreak-associated (1,239 from outbreaks starting in 2026 and 1,375 from outbreaks that started in 2025).

For the full year of 2025, a total of 2,289 confirmed* measles cases were reported in the United States. Among these, 2,263 measles cases were reported by 45 jurisdictions: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Jersey, New Mexico, New York City, New York State, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, Wisconsin, and Wyoming. A total of 26 measles cases were reported among international visitors to the United States.

There were 48 outbreaks** reported in 2025, and 90% of confirmed cases (2,066 of 2,289) were outbreak-associated. For comparison, 16 outbreaks were reported during 2024 and 69% of cases (198 of 285) were outbreak-associated.

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

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