Utah’s Ongoing Measles Outbreak Challenges Public Health Efforts

Utah has faced significant challenges in controlling measles outbreaks over the past year. Since the first outbreak on June 20, 2025, more than 680 individuals have contracted the disease. The widespread transmission across nearly every county has made containment difficult, unlike the more localized outbreaks in Texas, South Carolina, and Arizona.

Measles cases surfaced in various public settings such as healthcare facilities, stores, restaurants, and youth events. A notable incident occurred during a state high school wrestling championship in February, leading to at least 46 confirmed cases.

Recognized as one of the most contagious diseases, measles presents symptoms like rash, high fever, strong cough, ear infections, and diarrhea. While most patients recover, some—especially young babies, pregnant individuals, and those with weakened immune systems—face serious risks, including pneumonia and brain infections. Preventative vaccination with two doses offers 97% protection.

Recent weeks have seen a reduction in cases, but concerns about a resurgence remain. State epidemiologist Leisha Nolen warned of a potential increase with school reopening and colder weather. “It’s still here, it’s still transmitting,” Nolen stated, emphasizing the threat of new outbreaks in vulnerable communities.

Lower Vaccination Rates Lead to Increased Vulnerability

Particularly hard hit has been the southwestern region, which saw 265 cases and challenges stemming from diminished vaccination rates. Across Utah, measles affected 22 of the state’s 29 counties, with the northeastern tricounty health region—Daggett, Duchesne, and Uintah counties—experiencing significant declines in childhood vaccination rates.

This region recorded the second-largest drop in measles vaccinations, with over 16% of kindergarteners lacking vaccination. Statewide, the rate stood at 12.8%, well below the 95% target essential to curtail outbreaks. This led to 74 cases reported by the TriCounty Health Department, following exposure at a youth wrestling event.

Local hesitancy to vaccinations has grown, yet public health officials remain confident in their response. Measures included isolating sick individuals and excluding unvaccinated students from school. These actions, combined with community outreach, increased vaccinations.

In particular, the health department’s role as a community ally rather than enforcer was emphasized through personal outreach. TriCounty’s infectious disease specialist Cyndie Mattinson described a productive engagement with a concerned parent, proving the department’s supportive stance.

National Implications of Utah’s Measles Battle

Utah’s protracted measles challenge could influence the United States’ measles-free status. For a nation to be declared measles-free, it must halt continuous local transmissions for over a year. With the national case count at 2,104 by June 18, there is concern for this status.

The linkage between early cases and the substantial outbreak along the Utah-Arizona border remains unclear. However, most cases now originate within Utah, independent of other states.

Health experts from the U.S. and Mexico will assess elimination status in November, following Canada’s prior loss due to sustained outbreaks. Meanwhile, local efforts to maintain public health continue to intensify.

In Utah, medical professionals like Dr. Ellie Brownstein strive to improve public health policies. Her opposition to a bill facilitating easier vaccine waivers at schools highlighted the ongoing struggle against vaccine hesitancy. Despite the bill’s failure, Brownstein expressed worry about controlling the resurgence, stating, “I don’t know that we can get it to end.”

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education and the Robert Wood Johnson Foundation. The AP holds sole responsibility for the content.