The Colorado Department of Public Health and Environment and El Paso County Public Health have confirmed measles in two unvaccinated El Paso County adults, officials said Sunday evening.

The adults are unrelated, but both were at Denver International Airport around the same time on May 14, state and local public health officials said in a joint news release. They are both recovering at home.

These two additional cases bring the total number of measles cases associated with an out-of-state traveler who flew while infected up to six. They include four passengers on Turkish Airlines flight 201, which arrived at Denver International Airport on May 13 — three Colorado residents and one out-of-state resident — and the two El Paso County residents who were at the airport during the exposure period, officials said in the release.

The health departments are notifying the public of other areas for potential measles exposures as a result of these confirmed cases.

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

• Love’s Travel Stop/Carl’s Jr., 748 22 Road, Grand Junction, on May 27 from 6-10 p.m. Symptoms may develop through June 17.

• Maverick gas station, 2588 Airport Road, Colorado Springs, on May 28 from 9-11:30 a.m. Symptoms may develop through June 18.

• King Soopers, 1750 W. Uintah St., Colorado Springs, on Saturday from 8:30 a.m.-12:45 p.m. Symptoms may develop through June 21.

Measles is highly contagious and can lead to serious complications like pneumonia, encephalitis or death, according to the Centers for Disease Control and Prevention. 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.

It is “especially critical” for people who have not been vaccinated with the measles, mumps and rubella (MMR) vaccine to monitor their symptoms, officials said. The vaccine is administered within 72 hours after exposure to measles and can prevent infection.

Any person who was at these listed locations during the exposure window and later develops symptoms should immediately contact their health care provider by phone, officials said. People who do not have a provider should call an urgent care center or emergency department and explain they may have been exposed to measles. Calling ahead helps prevent additional exposures.

The state health department’s measles webpage, cdphe.colorado.gov/dcphr/measles-information, includes up-to-date cases of measles in Colorado as they are confirmed, and an updated list of exposure locations.