The Colorado Department of Public Health and Environment and the Weld County Health Department confirmed a case of measles in a Weld County resident on November 4, 2026. The confirmed case involves an infant who had not yet reached the age for routine measles, mumps, and rubella (MMR) vaccination and recently traveled internationally to an area with ongoing measles outbreaks.

Public exposures are possible at several healthcare facilities in Evans and Greeley, with specific dates and times provided for potential exposure.

Press Release: Colorado Department of Public Health and Environment

Published November 4, 2026. Reproduced in full from the Colorado Department of Public Health and Environment.

State public health officials confirm measles case in Weld County resident

Public exposures possible at several healthcare facilities in Evans, Greeley

Denver (Nov. 4, 2026), The Colorado Department of Public Health and Environment and the Weld County Health Department have confirmed a case of measles in a Weld County resident and are notifying the public of areas for potential measles exposures. The confirmed case involves an infant who had not yet reached the age for routine measles, mumps, and rubella (MMR) vaccination. The child recently traveled internationally to an area with ongoing measles outbreaks. An early dose of MMR vaccine is recommended for infants 6 months and older who plan to travel internationally.

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 down the body.

Known exposure locations

Based on available information, anyone who visited the locations at the listed dates and times may have been exposed to measles. We will add any newly identified locations to the CDPHE exposures webpage as they are confirmed.

  • Location
  • Date and time
  • When symptoms may develop
  • Monfort Family Clinic
    2930 11th Ave.
    Evans, CO 80620
  • Wednesday, Oct. 21
    7:40-10:15 a.m
  • Through Wednesday, Nov. 11
  • UCHealth Greeley Hospital
    6767 W. 29th St.
    Greeley, CO 80634
  • Wednesday, Oct. 21
    8:55 a.m. to 2:40 p.m.
  • Through Wednesday, Nov. 11
  • UCHealth Greeley Hospital
    6767 W. 29th St.
    Greeley, CO 80634
  • Friday, Oct. 23
    3-5:26 p.m.
  • Through Friday, Nov. 13
  • Banner North Colorado Medical Center Emergency Department
    1801 16th St.
    Greeley, CO 80631
  • Sunday, Oct. 25
    8:30-11:50 a.m.
  • Through Sunday, Nov. 15
  • Banner North Colorado Medical Center Emergency Department
    1801 16th St.
    Greeley, CO 80631
  • Sunday, Oct. 25
    4:25-9:32 p.m.
  • Through Sunday, Nov. 15
  • Banner North Colorado Medical Center
    Inpatient Pediatric Unit
    1801 16th St.
    Greeley, CO 80631
  • Sunday, Oct. 25
    8:40 p.m. through
    Wednesday, Oct. 28
    10:15 a.m.
  • Through Wednesday, Nov. 18

What to do if you were exposed

Watch for symptoms: If you were at the locations at the listed dates and times, you may have been exposed. Watch for symptoms for 21 days after exposure. 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 have not yet reached the age for routine MMR vaccination. If you develop symptoms, call your provider for medical guidance, and report your symptoms to your local public health agency or CDPHE (720-653-3369).

Call before you go: If you think you have measles symptoms and need medical care, do not delay. Call your healthcare provider, urgent care, or emergency department before going in, and tell them you may have been exposed to measles. This simple step helps protect other patients and staff from potential exposure and can prevent further spread to others.

More information

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.