Updated

Updated · East Idaho News · Jul 3

Wyoming Confirms 2nd 2026 Measles Case, Warns of June 17-25 Teton County Exposure

Updated

Updated · East Idaho News · Jul 3

Wyoming Confirms 2nd 2026 Measles Case, Warns of June 17-25 Teton County Exposure

Q: With cases at a 30-year high, will the U.S. lose its hard-won measles elimination status in 2026?

Yes — based on the evidence so far, the U.S. is at high risk of losing its measles elimination status in 2026, and many experts say that now looks likely. The key issue is not just the record case count, but sustained local transmission. Measles elimination, achieved in 2000, means there is no continuous domestic transmission for 12 months or more. The U.S. has already logged 2,170 confirmed cases by July 2, 2026, after 2,289 cases in 2025, with most infections tied to outbreaks and more than 90% occurring in unvaccinated people. Health authorities say many 2026 cases are linked to outbreaks that began in 2025, raising the risk that the 12-month threshold has been crossed. Vaccination trends are a major reason. National MMR coverage among kindergartners fell to 92.5% in the 2024-25 school year, below the 95% level generally needed for community protection. Wyoming reflects that pattern: its kindergarten MMR rate dropped to 93.6% in 2025, and the state has now reported another measles case in a tourist-heavy area of Teton County. The formal decision is expected in November 2026, when the Pan American Health Organization reviews the U.S. status. The U.S. has already been placed in a “sustained with major concerns” category. It has not officially lost elimination status yet, but unless transmission is shown to have been interrupted, the country is likely to lose it.

3 articles · Updated · East Idaho News · Jul 3

An unvaccinated adult in Teton County became Wyoming’s second confirmed measles case of 2026, prompting a public warning as summer tourism swells around Jackson and Grand Teton National Park.
Possible exposure occurred between June 17 and June 25 at Colter Bay Village restaurants, a Colter Bay convenience store and a Target in Jackson, the state health department said.
Health officials urged exposed people to monitor for symptoms for 21 days and avoid crowded settings, especially if they have not received the MMR vaccine.
Wyoming had gone 15 years without a confirmed measles case until 2025; vaccination among kindergarteners has recovered to 93.6% but remains below the 95% level needed for community immunity.
The case comes amid a broader U.S. resurgence tied to falling vaccination rates, with neighboring Utah reporting 499 measles cases so far in 2026.