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Measles Outbreak Confirmed in Wyoming's Teton County

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Health Desk

In Short: The Wyoming Department of Health has confirmed a third case of measles in Teton County, marking the state's first outbreak of 2026.

June 2022 Teton County, Wyoming, tornado damage
Photo: USDA Forest Service - Teton Interagency Helitack / Wikimedia Commons (Public domain)

The Wyoming Department of Health (WDH) has confirmed a third case of measles in Teton County, marking the state's first outbreak of 2026. This case, involving an adult with an unknown vaccination status, is linked to the previous two Teton County cases through the same chain of transmission.

Measles, a highly contagious virus, can cause severe illness. The WDH emphasizes the importance of vaccination as the best way to prevent infection.

For more information on measles, including case counts, exposure locations, and guidance on what to do if you have been exposed, visit the WDH's website at https://health.wyo.gov/publichealth/infectious-disease-epidemiology-unit/disease/measles/.

Wyoming, a landlocked state in the Mountain West subregion of the Western United States, borders Montana, South Dakota, Idaho, Utah, and Colorado. This latest outbreak underscores the ongoing importance of public health measures in the state.

Background

Wyoming is a landlocked state in the Mountain West subregion of the Western United States. It borders Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the southwest, and Colorado to the south.

Jackson (WY, USA), Teton County Library -- 2022 -- 125527
Photo: Dietmar Rabich / Wikimedia Commons (CC BY-SA 4.0)

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