Measles Updated 6/01/2026
6/1/2026 The Colorado Department of Public Health and Environment and Delta County Public Health have confirmed a case of measles in a Delta County resident. The child under 5, who had received one dose of measles, mumps, and rubella (MMR) vaccine, has no known connection to other recent measles cases reported in Colorado and has not traveled outside the state. The lack of a clear source of infection suggests that this case may be the result of an unidentified exposure in the community.
● Known exposure locations for all cases continue to be updated on the CDPHE measles exposures website.
● Colorado has reported 23 measles cases in 2026. Measles continues to circulate in the United States, with 1,983 confirmed cases reported to CDC between Jan. 1 and May 28, 2026. Outbreaks continue to be reported in nearby states, including Utah and Arizona.
CDPHE announced the addition of measles wastewater surveillance data to its publicly available Wastewater Surveillance Data Dashboard. https://cdphe.colorado.gov/dcphr/wastewater#dboard1
As of May 28, 2026, 1,983 confirmed* measles cases were reported in the United States in 2026. Among these, 1,974 measles cases were reported by 40 jurisdictions: Alaska, Arizona, California, Colorado, District of Columbia, Florida, Georgia, Idaho, Illinois, 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, Texas, Utah, Vermont, Virginia, Washington, Wisconsin, and Wyoming. A total of 9 measles cases were reported among international visitors to the United States.
There have been 30 new outbreaks** reported in 2026, and 93% of confirmed cases (1,847 of 1,983) are outbreak-associated (517 from outbreaks starting in 2026 and 1,330 from outbreaks that started in 2025).
For the full year of 2025, a total of 2,288 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 25 measles cases were reported among international visitors to the United States.
There were 48 outbreaks** reported in 2025, and 90% of confirmed cases (2,065 of 2,288) 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.
Anyone 6 months of age or older traveling to these areas or internationally are recommended to be vaccinated with the MMR vaccine. As a reminder, if your child has not had their MMR vaccine, daycares or schools could require them to stay home if you are in an area where there are current cases. For more information on the current outbreaks and recommendations please visit: https://www.cdc.gov/measles/data-research/index.htmlPlease call the office to schedule a visit if you would like to get your child’s MMR vaccine.
Measles is a highly Contagious respiratory virus that can survive in the air and on surfaces for up to two hours. Measles isn’t just a little rash. Measles can be dangerous, especially for babies and young children.
The most recognizable measles symptom is a very high fever accompanied by a red or brownish blotchy rash that typically starts on the face, although this is not the only symptom.
Before the rash appears, children with measles develop cold-like symptoms, including:
• Cough
• Runny nose
• Fever
• Red, watery eyes
These symptoms tend to get worse during the first 1 to 3 days of the illness.
If you have further questions, call our office and ask to speak to one of our nurses, or to schedule to update your child’s vaccinations please call 970-375-0100 opt 4.