Measles Outbreak Declared in Broomfield, Colorado

CO CDPHE Press Releases

Published March 4th, 2026

Detected March 5th, 2026

Summary

Colorado public health officials have confirmed a measles outbreak following a third connected case. The announcement details known exposure sites and dates in Broomfield, urging unvaccinated individuals to consider post-exposure prophylaxis and monitor for symptoms. The public is advised to contact health officials if symptoms develop.

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What changed

Colorado public health officials, including the Department of Public Health and Environment and Adams County Health Department, have declared a measles outbreak after confirming a third connected case. This notice identifies specific locations and times in Broomfield where individuals may have been exposed to the measles virus. The announcement emphasizes the highly contagious nature of measles and the importance of the MMR vaccine for prevention.

Individuals who were present at the listed exposure sites are advised to monitor for symptoms for 21 days post-exposure. Those unvaccinated are encouraged to seek post-exposure prophylaxis (MMR vaccine within 72 hours or immunoglobulin within six days) if eligible. Affected individuals experiencing symptoms are instructed to call healthcare providers or public health agencies before seeking medical care to prevent further spread. This notice serves as a public health alert and does not impose new regulatory requirements but highlights critical public health actions.

What to do next

Review listed exposure sites and dates for potential personal or patient exposure.
Advise unvaccinated individuals who may have been exposed to seek post-exposure prophylaxis if eligible.
Instruct individuals experiencing symptoms to call healthcare providers before visiting to prevent further spread.

Source document (simplified)

Colorado public health officials confirm measles case, release locations for potential exposures in Broomfield

Wednesday, March 4, 2026

Submitted by [user:fieldfirstname]

Denver (March 4, 2026) — The Colorado Department of Public Health and Environment and Adams County Health Department have confirmed a second case of measles in an unvaccinated Adams County resident and are notifying members of the public of additional areas for potential measles exposures. The child is a known contact of a recent measles case tied to Broomfield High School. Students and staff who may need to take additional health precautions will be contacted directly by local public health officials and school administrators. Other exposures for this individual are under investigation. Because this is the third connected case, public health officials have officially classified this situation as a measles outbreak.

Measles is a highly contagious, but preventable disease. Getting the measles, mumps, and rubella (MMR) vaccine is the best way to protect yourself, your family, and your community.

Symptoms and prevention:

Measles symptoms begin with fever, cough, runny nose, and red eyes, followed by a rash that usually starts several days later on the face and spreads. If you have not had the MMR vaccine, you can still get it within 72 hours of exposure to help prevent illness. In some exposure cases, immunoglobulin given within six days may also help prevent or lessen illness.

Known exposure locations:

Based on available information, anyone who was in the locations at the listed dates and times may have been exposed. If you were there, watch for symptoms for 21 days after exposure. If symptoms develop, call CDPHE (720-653-3369) or your local public health agency right away. If you need medical care, do not delay. Call your health care provider, urgent care, or emergency department before going in, and tell them you may have been exposed to measles. This helps prevent further spread. Monitoring for symptoms is especially critical for people who have not been vaccinated with the MMR vaccine, particularly infants under one year of age who are not routinely recommended for the vaccine.

We will add any new exposure locations to the CDPHE exposures webpage as they are identified.

| Location | Date/time | When symptoms may develop |
| --- | --- | --- |
| Broomfield Heights Middle School
1555 Daphne St.
Broomfield, CO 80020 | Tuesday, Feb. 17
Wednesday, Feb. 18
Thursday, Feb. 19
8:30 — 6 p.m. | Through March 12 |
| Broomfield Community Center
280 Spader Way
Broomfield, CO 80020 | Thursday, Feb. 19
7:35-10:30 p.m. | Through March 12 |

More info:

Visit the CDPHE measles webpage, which includes information about symptoms, transmission, and vaccine recommendations, 2026 Colorado measles case information, and a current list of exposure locations.

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