COCONINO COUNTY — Yavapai County Community Health Services (YCCHS) and Coconino County Health and Human Services (CCHHS) officials announced that wastewater samples from the City of Sedona Wastewater Treatment Plant taken on July 7 and July 9, 2026, have tested positive for measles virus.
Arizona Department of Health Services (ADHS) monitors wastewater to provide early detection of infectious diseases. The positive wastewater test, conducted by Arizona State Public Health Laboratory (ASPHL), indicates that one or more people with a recent measles infection have been in the area.
People infected with the measles virus may shed the virus in their urine before a rash appears and for several weeks afterward. Wastewater test results can show when the measles virus is in the wastewater, but the results do not indicate how many people in the area are shedding the virus and cannot be traced back to individuals.
