Measles Detected in Jackson County Wastewater
Public health officials say the low-level detection suggests measles was recently present in the local wastewater system, but does not indicate sustained community transmission
JACKSON COUNTY, Ore. — Jackson County Public Health is alerting residents after measles was detected in sewage samples collected through routine wastewater testing.
The positive sample was collected May 6 from a wastewater treatment plant in Jackson County and met a low threshold level, according to the agency. Public health officials said the finding represents a rapid change from non-detectable to detectable measles concentrations in wastewater.
It is the first low-level measles detection in Jackson County since local wastewater collection for measles began in October 2025.
Public health officials said the detection indicates that at least one person in the local area served by the wastewater treatment plant was infected with measles, and that limited spread may be occurring in the community. However, officials said the detection does not indicate sustained community transmission.
Wastewater testing is used as a public health monitoring tool. Anyone who uses a bathroom connected to the sewage system contributes to routine testing, and results cannot be traced back to individual people.
Jackson County Public Health said residents concerned about measles exposure should check their vaccination status, along with the vaccination status of family members.
Measles is highly contagious and can cause serious illness in children and adults. Public health officials said about one in 10 people with measles requires hospitalization, and the illness can become life-threatening.
The best and safest way to prevent measles is the MMR vaccine, which protects against measles, mumps and rubella. Most people born before 1957 are considered immune. Residents unsure of their vaccination status are encouraged to contact their health care provider or Jackson County Public Health.
Jackson County Public Health’s Immunization Clinic offers the MMR vaccine for children and adults. Appointments can be scheduled by calling 541-774-8209.
Symptoms of measles can include cough, runny nose, red eyes and a high fever, followed by a rash that spreads down the body. Complications may include ear infections, lung infections and diarrhea. A rare but more serious complication is inflammation of the brain, known as encephalitis.
Anyone who suspects they may have measles should immediately isolate to avoid spreading the virus. Public health officials advise calling a doctor or emergency room before going in person so special arrangements can be made. People with suspected measles should also stay home for four days after the rash appears.
Cover image: The Jackson County wastewater treatment facility is shown in a file image. Jackson County Public Health says measles was detected through routine wastewater testing in Jackson County. Image courtesy City of Medford.
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