Measles Cases at Wasatch High Rise to 8 as Utah Tops 100 Infections

Health officials are directing unvaccinated students with possible exposure to stay home for 21 days.

Overview

Wasatch County Health Department confirmed eight measles cases among Wasatch High School students on Tuesday, adding three newly positive unvaccinated students.
Officials suspect exposures during regular school hours on Nov. 14, 17 and 18, as well as at a school play on Nov. 15.
A joint letter to families instructed potentially exposed, unvaccinated students to quarantine for the full incubation period and urged MMR vaccination, which officials say is about 97% effective.
Wasatch County reports low documented MMR coverage, with 13% of seventh graders lacking two-dose documentation in 2024–25, as statewide vaccine exemptions reached 9% for both kindergarten and seventh grade.
Utah’s statewide total reached 102 measles cases, including 24 diagnosed in the past three weeks, and a Nov. 6 wastewater test in Wasatch County detected the virus.