There is a current measles outbreak in Teton County. For more information about this outbreak, visit: https://www.tetoncountywy.gov/2889/Measles-Rubeola and https://www.nps.gov/grte/index.htm
Measles is caused by a virus that is easily spread through the air and settles on surfaces. While most people recover from measles, some become seriously ill and can die from it. This is especially true for children younger than age 5 and people with weakened immune systems. The best way to prevent measles is to get the vaccine.
Click here to learn what to do if you think your child has measles.
Click here to view the measles factsheet.
Wyoming measles information
News: Five Teton County Measles Cases Confirmed by Wyoming Department of Health
News: Fourth Measles Case of 2026 Confirmed by Wyoming Department of Health
News: Third Measles Case of 2026 Confirmed by Wyoming Department of Health
News: Second Measles Case of 2026 Confirmed by Wyoming Department of Health
If you were at these locations during these times, you may have been exposed to measles:
- Smith’s Food and Drug, 1425 South Highway 89, Jackson, WY 83001
- July 5, 2026, 11:30 AM through 1:30 PM
- Wendy’s, 525 West Broadway, Jackson, WY 83001
- July 5, 2026, 12:15 PM through 2:15 PM
- Colter Bay Convenience Store, Grand Teton National Park, 1 Colter Bay Village Road, Moran, WY 83013
- July 7, 2026, 9:00 AM through 11:00 AM
- Colter Bay Cabin Office, Grand Teton National Park
- July 7, 2026, 3:00 PM through Midnight
- Annie’s Thai Kitchen, 265 W Broadway, Jackson, WY 83001
- July 4, 2026, 5:00 PM through 8:00 PM
- Teton Village, Base of Jackson Hole Mountain Resort (July 4 fireworks event, outdoor exposure only)
- July 4, 2026, 6:30 PM through 11:00 PM
- Colter Bay Launderette and Showers, Grand Teton National Park, 100 Colter Bay Village Rd., Moran, WY 83013
- July 5, 2026, 6:45 AM through 5:15 PM
- July 6, 2026, 6:45 AM through 5:15 PM
- July 7, 2026, 1:30 PM through 10:30 PM
- Target Jackson Hole, 510 S Highway 89, Jackson, WY 83001
- July 5, 2026, 7:00 AM through 7:00 PM
- July 6, 2026, 7:00 AM through 7:00 PM
- July 7, 2026, 7:00 AM through 7:00 PM
- Smith’s Food and Drug, 1425 South Highway 89, Jackson, WY 83001
- July 8, 2026, 9:00 AM through Noon
2026 Detected Measles Cases by County (Updated 7/15/2026)
Total reported cases: 6
Fremont: 1
Teton: 5
Resources
General Measles Information
General information about measles, including how it spreads, symptoms, treatment, and prevention
Toolkit for Public Health Professionals
Public health professionals can use this toolkit to communicate with different audiences when preparing and responding to measles cases and outbreaks.
Information for Infection Preventionists
Guidelines and recommendations for the prevention of transmission of measles in healthcare settings.
Guidance for Schools and Childcare Facilities
Guidelines and recommendations for the prevention of transmission of measles in healthcare settings.