Utah’s Ongoing Measles Battle

Over the past year, Utah has been grappling with significant measles outbreaks—a situation that might jeopardize the United States’ measles-free status.

Since the first outbreak began on June 20, 2025, more than 680 individuals have fallen ill. Unlike outbreaks in other states like Texas, South Carolina, and Arizona, Utah’s situation has been hard to confine to one area, with cases emerging in nearly every county, particularly among undervaccinated communities.

Measles has appeared in various settings, including healthcare facilities, large retail stores, and restaurants, as well as at youth sporting events. A specific incident at a high school wrestling championship in February resulted in at least 46 infections among attendees.

This virus is known for being extremely contagious, leading to symptoms such as distinct rashes, high fevers, severe coughing, ear infections, and diarrhea. While many recover, certain groups—like young infants, pregnant individuals, and those with weakened immune systems—face a higher risk of severe complications, including pneumonia, brain inflammation, and even death. Interestingly, even healthy people might experience long-term effects, such as a rare yet fatal brain disease manifesting years after the infection.

The measles vaccine is both safe and highly effective, providing 97% immunity after two doses.

Though recent weeks have shown a decline in the outbreak’s spread, state epidemiologist Leisha Nolen isn’t feeling particularly reassured. She fears that the return to school and colder weather in the fall could trigger another surge. “It’s still here, still transmitting,” she pointed out. “Just a few cases in the wrong community could lead to a larger outbreak.”

The Impact of Lower Vaccination Rates in Utah

The most severe outbreaks have predominantly occurred in the southwestern region of the state, where 265 cases have been reported since last summer. Overall, measles has affected 22 out of 29 counties in Utah.

In the northeastern rural areas, particularly in the “tricounty” health region, conditions have also been ripe for transmission. Counties like Daggett, Duchesne, and Uintah have noted a significant decline in childhood vaccination rates. More than 16% of kindergarteners in this region were not vaccinated against measles in the last school year, compared to a statewide average of 12.8%. This falls short of the 95% vaccination threshold necessary to prevent outbreaks.

This spring, the TriCounty Health Department recorded 74 measles cases, primarily stemming from infections contracted during a youth wrestling tournament, which then spread in schools and households.

According to Sydnee Lyons, the public information officer for the health department, vaccine hesitancy has been a growing concern. However, despite the high number of cases, local health officials view TriCounty’s response as a success. Efforts to curb the spread included excluding unvaccinated students from in-person schooling and advising sick individuals to isolate themselves. A community appeal for vaccination led to an increase in individuals seeking immunization.

Cyndie Mattinson, an infectious disease specialist in TriCounty, shared a story about a parent hesitant to engage with health department officials due to fears of judgment regarding her unvaccinated children. The nurse reassured her that the health staff was there to help, leading to a productive conversation and a change in perception.

Future Uncertainties About Measles Status in the U.S.

Utah’s prolonged struggle with measles may play a crucial role in determining whether the U.S. can maintain its measles-free designation. Public health guidelines state that measles is considered eliminated when no continuous spread occurs within communities for at least a year.

The national count of measles cases stood at 2,104 as of June 18, nearly exceeding last year’s record.

While Utah’s cases initially included clusters believed to be linked to an outbreak near the Utah-Arizona border detected in August, it seems that most current cases are local.

International health experts are set to convene in November to assess whether the U.S. and Mexico still hold their measles elimination status, after Canada lost its designation last year due to ongoing outbreaks.

As the situation continues to evolve, doctors in Utah are working hard to reassure anxious patients and advocate for better health policies. Dr. Ellie Brownstein, the president-elect of the state chapter of the American Academy of Pediatrics, has been vocal against legislation making it easier to obtain school vaccine exemptions. Although that bill failed, she notes that there hasn’t been a thorough societal reflection on the resurgence of measles. “I don’t know that we’re going to completely eradicate it,” Brownstein admitted. “There are enough individuals out there to keep it spreading.”