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Measles Case in Out-of-State Visitor Prompts Health Alert Near Monarch Pass, Colorado

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Published on August 04, 2025
Measles Case in Out-of-State Visitor Prompts Health Alert Near Monarch Pass, ColoradoSource: Photo Credit:Content Providers(s): CDC/Dr. Heinz F. Eichenwald, Public domain, via Wikimedia Commons

In a recent announcement, the Colorado Department of Public Health and Environment, in conjunction with Chaffee County Public Health, confirmed a case of measles in an out-of-state visitor. The health authorities are alerting the public to the potential for measles exposure in certain locations near Monarch Pass. For those concerned about potential exposure, being vaccinated remains the most effective defense against the disease, which is noted for its high contagion and risk of severe health complications.

Health officials have listed specific times and places where exposure may have occurred, particularly highlighting Monarch Mountain at the Crest Gift Shop on July 25 between 4:30 and 7 p.m. Those present at the location around that time are urged to watch out for symptoms until at least August 15. Symptoms, which may appear from 7 to 21 days following exposure, range from fever and cough to a characteristic facial rash. Especially for those unvaccinated with the MMR vaccine, close symptom monitoring is advised, along with avoiding public gatherings to minimize further spread, according to CDPHE.

In line with the recent incident, Colorado health authorities maintain the importance of vaccination as the primary preventive measure against measles. This vaccine-preventable infectious disease has the potential for serious health complications, but through the MMR vaccine, individuals gain robust protection. Coloradans, along with visitors alike, are encouraged to stay informed on the developing situation and heed the guidance provided by public health officials.