As of May 22, 2025, a total of 1,046 confirmed measles cases were reported by 31 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, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Vermont, Virginia, and Washington. A breakdown of cases shows: Under 5 years: 311 (30%); 5-19 years: 389 (37%); 20+ years: 336 (32%); Age unknown: 10 (1%). Vaccination Status: Unvaccinated or Unknown: 96%; One MMR dose: 1%; Two MMR doses: 2%.

Click here to view an ongoing report on measles cases throughout the U.S. The data therein reflects confirmed measles cases reported to CDC as of noon ET on Thursdays.