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2w ago

Border Measles Outbreak Widens as Utah Cases Reach 41 and Spread North

Health officials warn low MMR coverage is fueling transmission, with wastewater detections pointing to wider circulation than confirmed cases show.

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Rising Measles Cases in Arizona and Utah Spark Health Alerts
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Sterile water is prepared for a one dose bottle of measles, mumps and rubella virus vaccine at the Salt Lake County Health Department on April 26, 2019.

Overview

  • Utah has confirmed 41 measles cases in 2025, including 27 in Southwest Utah, 7 in Utah County, 3 in Southeast Utah, and 4 in the Bear River district.
  • Mohave County, Arizona, reports 42 linked cases centered around the Colorado City area, with officials confirming at least one child hospitalization.
  • Bear River Health Department issued exposure notices tied to a Chick-fil-A in Providence and Intermountain Budge Clinic in Logan after confirming its first local cases.
  • Public health teams provided immunoglobulin to 11 unvaccinated infants in northern Utah following identified exposures within the treatment window.
  • Most infections involve unvaccinated, school-age children, and officials are urging MMR vaccination as local rates in parts of Mohave and Washington counties fall well below the 95% herd-immunity threshold.