One more case of the measles in El Paso County has been confirmed by the Colorado Department of Public Health and Environment, officials said last week. The case is one of three recently confirmed in the county. 

The case is one of two announced in a news release by health officials and involves a child under 5 who recently traveled with family to Ontario, Canada, where six babies with unvaccinated mothers have been born with congenital measles, according to multiple reports.

The El Paso County child is recovering at home, officials said.

The child was vaccinated with one dose of the measles, mumps and rubella vaccine, according to department officials. 

The second case involves an unvaccinated Arapahoe County adult who was at Denver International Airport on May 13, during the exposure period of an out-of-state traveler who flew while infectious. 

Last week, officials from the department confirmed two other cases of measles in El Paso County, both of which were two unrelated adults who were at the Denver airport around the same time May 14. The cases were also associated with the out-of-state traveler, who flew on a Turkish Airlines flight while infected.

According to the Associated Press, Colorado has seen a total of 12 measles cases in 2025, including one outbreak of seven related cases linked to the Turkish Airlines flight.

The Centers for Disease Control and Prevention confirmed 1,168 measles cases in the U.S. last week, with 17 outbreaks reported in 2025 and 89% of cases being outbreak-associated.

There are three ongoing major outbreaks in North America, according to the Associated Press. The longest, in Ontario, Canada, has resulted in 2,099 cases from mid-October through June 3. The first death was logged last week and was a baby that got congenital measles but also had other preexisting conditions.

In the U.S., Colorado and eight other states have active outbreaks, defined by the CDC as three or more related cases. 

Based on available information, public health officials said anyone who was at the following locations during the listed dates and times may have been exposed to measles:

• Powers Pointe Urgent Care, 5607 Barnes Road, Colorado Springs, on June 3 from 9:30 a.m. – 12:30 p.m. Symptoms may develop through June 24.
• HCA HealthONE Aurora Emergency Department, 1501 South Potomac St., Aurora, on June 5 from 4:55-10:05 p.m. Symptoms may develop through June 26.
• Safeway, 1200 South Buckley Road, Aurora, on Friday, June 6, from 4-6:15 p.m. Symptoms may develop through June 27.
• St. Francis Medical Center Emergency Department, 6001 East Woodmen Road, Colorado Springs on Saturday, June 7, from 9:30-10:50 a.m. Symptoms may develop through June 28.
• UCHealth University of Colorado Hospital Emergency Department, 12605 East 16th Ave., Aurora, on Saturday, June 7, from 2-4:10 p.m. Symptoms may develop through June 28.

Measles is highly contagious and can lead to serious complications like pneumonia, encephalitis or death, according to the CDC. The best way to prevent contracting the virus is to be vaccinated against it, public health officials said in the release.

Anyone who may have been exposed to measles should monitor for symptoms for 21 days after exposure and should consider avoiding public gatherings or high-risk settings, health officials said.

Symptoms include fever, cough, runny nose, red eyes and a characteristic rash that typically starts on the face several days after exposure, then spreads.