Second case of measles confirmed in Teton County, including Grand Teton National Park

MOOSE, Wyo.-The Wyoming Department of Health (WDH) has confirmed a second case of measles in Teton County. WDH is leading the public health response, including contact tracing and public health guidance, with support from the National Park Service Office of Health and Safety. Grand Teton National Park is sharing this information to help notify park visitors, employees and community members who may have been exposed.

The public may have been exposed to measles at the following locations and times in Grand Teton National Park:

• Colter Bay Convenience Store, July 7, 2026, from 9 a.m. through 11 a.m.

• Colter Bay Cabin Office, July 7, 2026, from 3 p.m. through midnight

Other locations and times in Teton County where the public may have been exposed include:

• Smith's Food and Drug, July 5, 2026, from 11:30 a.m. through 1:30 p.m.

• Wendy's, July 5, 2026, from 12:15 p.m. through 2:15 p.m.

Measles is a highly contagious viral illness that spreads through the air when an infected person coughs or sneezes. The virus can remain in the air for up to two hours after an infected person leaves an area. Symptoms typically develop seven to 21 days after exposure and may include fever, cough, runny nose, red eyes and a rash.

Individuals who were at the listed locations during the identified times should monitor themselves for symptoms for 21 days following their potential exposure. Anyone who develops symptoms should call their health care provider before seeking medical care so appropriate precautions can be taken to prevent exposing others.

For the latest information, visit the Wyoming Department of Health website at Measles - Wyoming Department of Health.

-NPS-