TETON COUNTY, Wyo. — The Wyoming Department of Health recently confirmed a case of measles in an unvaccinated adult in Teton County.
A release from the WDH says that measles is a highly contagious disease that can cause severe illness.
The release states that the public may have been exposed to measles at the following locations and times (the times listed comprise the entire two-hour window for exposures):
- Smith’s Food and Drug, 1425 Wyoming Highway 89 South in Jackson
- July 5, 2026, 11:30 a.m.–1:30 p.m.
- Wendy’s, 525 W. Broadway in Jackson
- July 5, 2026, 12:15–2:15 p.m.
- Colter Bay Convenience Store, Grand Teton National Park, 1 Colter Bay Village Road in Moran
- July 7, 2026, 9–11 a.m.
- Colter Bay Cabin Office, Grand Teton National Park
- July 7, 2026, 3 p.m. through midnight
“We are asking people who may have been exposed to watch for measles symptoms for 21 days past the exposure date and consider avoiding crowded public places and high-risk settings such as daycare centers,” said Clay Van Houten, epidemiologist with the WDH.
The release states that monitoring for symptoms is especially critical for people who have not been vaccinated with the measles, mumps and rubella — or MMR — vaccine.
“The MMR vaccine provides safe, highly effective, and long-lasting protection against measles infection,” the release states. “WDH recommends that all Wyoming residents ensure that they and their children are up-to-date on MMR vaccines.”
The release notes that babies who are too young to get vaccinated, pregnant women who are not immune, and people with weak immune systems are more likely to have serious problems if they get the measles. The WDH recommends that people in these groups who believe they may have been exposed to measles contact their health providers.
Doctors may recommend treatment to help prevent illness for those who have been exposed.
Symptoms of measles include fever, cough, runny nose, red or watery eyes and a rash that starts on the face and spreads down the body. Those who get sick with these symptoms should call their healthcare provider for guidance.
“Calling ahead in non-emergency situations helps prevent additional exposures,” the release states. “If you have symptoms of measles, stay home and avoid contact with others unless you are getting healthcare. Avoiding contact with babies, pregnant women, and people with weakened immune systems is especially important.”
The Wyoming Department of Health posts measles case counts and exposure locations on its website.
