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Measles Detected in Corvallis Wastewater
No confirmed cases yet, but health officials warn of potential spread
Jan. 29, 2026 at 3:07pm
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The Benton County Health Department (BCHD) has detected the measles virus in wastewater samples from the Corvallis-Lewisburg area of Oregon. While no confirmed measles cases have been reported in the county, the positive wastewater test indicates there is or has recently been at least one infected person in the region. BCHD is working with state health officials to monitor the situation and prevent further spread of the highly contagious disease.
Why it matters
Measles was previously eliminated in the U.S. thanks to widespread childhood vaccination, but recent declines in vaccination rates have led to a resurgence of measles cases across the country. This detection in Corvallis' wastewater highlights the ongoing risk of measles outbreaks, especially in communities with lower vaccination coverage.
The details
The positive measles test result came from a wastewater sample collected on January 21, 2026 as part of a statewide monitoring program. No confirmed measles cases have been reported in Benton County yet, but health officials are urging residents to be aware of symptoms and get vaccinated. Measles is highly contagious and can spread rapidly, especially among unvaccinated populations.
- The positive wastewater sample was collected on January 21, 2026.
- Since the start of 2026, three measles cases have been reported elsewhere in Oregon.
The players
Benton County Health Department (BCHD)
The local public health agency responsible for monitoring and responding to the potential measles case in the Corvallis-Lewisburg area.
Oregon Health Authority (OHA)
The state public health agency that partnered with Oregon State University to begin wastewater testing for measles across Oregon in 2025.
Dr. Carolina Amador, M.D., MPH
The Benton County Health Officer and Pediatrician who emphasized the importance of vaccination in preventing measles.
What they’re saying
“Immunization is the best protection against measles”
— Dr. Carolina Amador, Benton County Health Officer and Pediatrician
“Measles was previously eliminated in the United States thanks to routine childhood vaccination. With increased vaccine hesitancy, we are seeing higher rates of measles cases across the nation.”
— Dr. Carolina Amador, Benton County Health Officer and Pediatrician
What’s next
BCHD is working closely with OHA and other local health officials to monitor the situation and prevent the spread of measles through outreach and education to healthcare providers and the public.
The takeaway
This detection of measles in Corvallis' wastewater underscores the ongoing threat of measles outbreaks, especially in communities with lower vaccination rates. It serves as a reminder for residents to ensure they and their children are fully vaccinated against this highly contagious disease.
