The Colorado Department of Public Health and Environment and Chaffee County Public Health have confirmed a case of measles in an out-of-state resident who was in Colorado.

Health officials said anyone who visited Monarch Mountain at the Crest Gift Shop in Salida Friday between 4:30-7 p.m. may have been exposed.

Those who believe they may have been exposed should monitor for symptoms for 21 days after exposure and consider avoiding public gatherings or high-risk settings, according to CDPHE.

Officials stressed that monitoring for symptoms is especially critical for those who have not been vaccinated with the measles, mumps and rubella vaccine.

Measles symptoms include fever, cough, runny nose, red eyes and a characteristic rash that usually starts several days later on the face and spreads.

CDPHE advises that the best way for individuals to protect themselves and others is to get vaccinated due to measles’ highly contagious nature, sometimes leading to serious health problems.

If you or a loved one start to develop symptoms, CDPHE urges that you call your care provider or an urgent care by phone and let them know you believe you may have been exposed to measles in advance, thus helping to prevent additional exposures.

Exposure locations will be updated as necessary, according to officials.