Measles Update: June 22
As of June 20, 2025, there have been 1,214 confirmed measles cases reported across 36 U.S. jurisdictions. Compared to our last reporting period on June 6, this represents a nearly 4% increase in cases, with 2 additional U.S. jurisdictions reporting measles cases: Alaska, Arkansas, Arizona, California, Colorado, District of Columbia, Florida, Georgia, Hawaii, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Montana, Nebraska, New Jersey, New Mexico, New York City, New York State, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Vermont, Virginia, and Washington.
Approximately 95% of cases occurred in individuals who were either unvaccinated or had an unknown vaccination status, underscoring the critical importance of measles-mumps-rubella (MMR) vaccine coverage for prevention.
There have been 23 outbreaks reported in 2025, and 89% of confirmed cases (1,081 of 1,214) are outbreak-associated. For comparison, 16 outbreaks were reported during 2024 and 69% of cases (198 of 285) were outbreak-associated.
The Centers for Disease Control and Prevention (CDC) is advising people to be aware of the heightened risk of measles during the summer travel season and to ensure they are up-to-date on their MMR (measles, mumps, rubella) vaccinations, especially before international travel. Many countries are also experiencing measles outbreaks, making it crucial to be protected against the disease.
Top New Cases Reported
Texas (+6)
Kansas (+3)
Michigan (+2)
Colorado (+2)
Florida (+2)
South Dakota (+2)
MOST IMPACTED AGE GROUP
By total cases: Ages 5–19 years account for 37% of cases.
By hospitalization rate: Children under 5 years represent the group most at risk for severe disease, with 21% of these cases requiring hospitalization.
CASE TREND
Table Summarizing Measles (MMR) Vaccination Guidance:
