SALT LAKE CITY — Despite an uptick in the number of measles cases detected through wastewater testing in northern Utah, one health official is not alarmed.

Since September 2025, Bear River Health has reported four measles cases, Davis County has detected two, Utah County has detected five, and Summit County has reported three.

Comparatively, southwest Utah officials have reported 15 cases of measles detected through wastewater testing.

Utah, Davis, Summit, and the Bear River Health Departments have seen measles in wastewater since then, some as recently as Oct. 28. But a comparison between northern and southern Utah shows a large difference.

Utah began testing for measles in wastewater in July 2025, and since that time, according to the Utah Wastewater Surveillance System, only southwe

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