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Measles Cases and Outbreaks

Excerpt:  “As of May 1, 2025, a total of 935 confirmed measles cases were reported by 30 jurisdictions: Alaska, Arkansas, California, Colorado, Florida, Georgia, Hawaii, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Montana, New Jersey, New Mexico, New York City, New York State, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Vermont, Virginia, and Washington. There have been 12 outbreaks (defined as 3 or more related cases) reported in 2025, and 93% of confirmed cases (869 of 935) are outbreak-associated. For comparison, 16 outbreaks were reported during 2024 and 69% of cases (198 of 285) were outbreak-associated.” (footnote omitted)