Multnomah County health officials have issued an urgent public health alert following the confirmation of a measles case directly linked to a Gresham WinCo grocery store. This critical update, announced on March 27, 2026, reinforces the importance of community vigilance against a highly contagious virus. Individuals who visited the WinCo Foods store at 2511 SE 1st St. in Gresham on Saturday, March 7, between 2 p.m. and 5 p.m., may have been exposed and are strongly urged to contact their healthcare providers immediately. Understanding the risks and knowing the right steps to take is essential for protecting yourself and the broader community in Oregon.
Measles Confirmed: What You Need to Know
A confirmed measles case in Multnomah County has heightened local concerns. Health authorities have confirmed that the individual contracted measles after being present at the specified Gresham WinCo location during the exposure window. While details about the individual remain confidential, county officials confirm they are cooperating fully to prevent further spread. They have reported that the person, though partially vaccinated with one dose of the MMR vaccine, is recovering. This case is part of a broader trend, with Oregon reporting at least 10 confirmed measles cases this year, reflecting an ongoing challenge for public health.
The WinCo Exposure Timeline and Public Health Response
The specific exposure event occurred on March 7, 2026, at the Gresham WinCo grocery store. Health officials acted swiftly, issuing warnings to the public about potential exposure weeks prior to the case confirmation. The Oregon Health Authority (OHA) and Multnomah County health teams are coordinating closely. Their immediate advice for anyone present at the WinCo on March 7, between 2 p.m. and 5 p.m., is to contact their doctor. This allows for a prompt assessment of immunity through vaccination records, age, or past infection evidence. Despite the confirmed case, officials currently believe the risk of widespread public transmission from this specific event is low.
Understanding Measles: A Serious Public Health Threat
Measles is an incredibly contagious respiratory virus. It spreads through the air when an infected person coughs, sneezes, breathes, or speaks. The virus can linger in the air and on surfaces for up to two hours after an infected person has left a room. It is remarkably efficient at spreading, capable of infecting up to 90% of unprotected close contacts. This high transmissibility underscores why vaccination is so crucial for preventing outbreaks.
Recognising Symptoms and Potential Complications
Symptoms typically begin seven to 21 days after exposure to the virus. Early signs often mimic a common cold, including:
High Fever: Can reach 104°F (40°C) or higher.
Cough: A persistent, dry cough.
Runny Nose (Coryza): Often accompanied by sneezing.
Conjunctivitis: Red, watery eyes, also known as pinkeye.
These initial symptoms are often followed in two to three days by the appearance of Koplik spots. These are tiny, distinctive white spots that appear on the inside of the cheeks. The characteristic measles rash usually emerges three to five days after the prodromal symptoms begin. It starts as flat, red spots on the head and neck, then spreads downwards to the trunk, limbs, and feet, often coalescing into larger patches. Individuals are contagious from four days before the rash appears until four days after it subsides.
Measles is not just a childhood rash; it can lead to severe complications, even in otherwise healthy individuals. These complications include:
Pneumonia (lung infection)
Ear infections (otitis media)
Diarrhea
Encephalitis (brain inflammation), affecting 1-3 per 1,000 infected children
Death, occurring in 1-3 per 1,000 infected children
Subacute sclerosing panencephalitis (SSPE), a rare but fatal degenerative neurological disease that can develop 7-10 years post-infection
The Critical Role of Vaccination
The measles, mumps, and rubella (MMR) vaccine is safe, highly effective, and the best defense against measles. The standard recommendation is two doses: the first between 12-15 months of age, and the second between 4-6 years of age (or as soon as four weeks after the first dose). For most people aged 6 months and older who are eligible, receiving the MMR vaccine within 72 hours of exposure can provide protection or modify the disease course. For those beyond this window, or who are high-risk (e.g., infants under 12 months, pregnant women without immunity, severely immunocompromised individuals), an immunoglobulin (IG) treatment may be administered within six days of exposure. It’s important to note that the MMR vaccine and IG should not be administered simultaneously.
Broader Context: Rising Measles Cases in Oregon and Nationwide
The confirmed Multnomah County measles case is not an isolated incident. Health officials across Oregon and the United States are grappling with a significant uptick in measles activity. Nationwide, nearly 2,300 cases were reported last year, a sharp increase since early 2025. The majority of these cases have occurred among unvaccinated children. This resurgence highlights a worrying trend, particularly when community vaccination rates fall below critical thresholds.
Dr. Richard Bruno, Multnomah County Health Officer, emphasized a crucial point: measles spreads far more rapidly when community immunity drops below a 93% vaccination threshold. Multnomah County’s current vaccination rate stands at approximately 90%. While generally good, this slight deficit places the community at a higher risk of rapid disease spread if the virus is introduced. This vulnerability makes proactive vaccination efforts even more vital.
Actions for Individuals and Healthcare Providers
If you suspect you or someone you know has measles, immediate action is necessary. Healthcare providers are advised to:
Report Suspected Cases: Immediately notify infection prevention teams and the local public health authority.
Consider Measles in Diagnosis: Especially for unvaccinated patients, those with known exposure, or recent travel to outbreak areas.
Isolate Patients: Promptly mask and isolate suspected measles patients, ideally in a negative pressure room. If not available, use a closed clinic room and schedule them as the last patient of the day.
Collect Specimens: Obtain nasopharyngeal (NP) or oropharyngeal (OP) swabs for measles PCR testing within five days of rash onset. Urine samples are also highly sensitive, especially 3-10 days post-rash.
- Encourage Vaccination: Promote MMR vaccination for all eligible individuals.
- Contact Your Doctor Immediately: Do not simply show up at a clinic or emergency room without calling first. This helps prevent further exposure to others in waiting areas.
- Verify Vaccination Status: Check your vaccination records. If you are unsure of your immunity, discuss this with your healthcare provider.
- Self-Isolate if Symptoms Appear: If you develop measles symptoms, stay home and limit contact with others until advised by a medical professional.
- www.opb.org
- katu.com
- www.koin.com
- multco.us
- www.cidrap.umn.edu
For the public, if you were at the Gresham WinCo on March 7 (2-5 p.m.) or if you develop symptoms:
This confirmed Multnomah County measles case serves as a stark reminder. While officials believe the immediate risk to the general public from this specific exposure is low, ongoing vigilance and robust vaccination coverage are essential to control highly transmissible diseases like measles.
Frequently Asked Questions
What are the key symptoms of measles and when should I seek medical attention?
Measles symptoms typically appear 7 to 21 days after exposure. Initial signs include a high fever, cough, runny nose, and red, watery eyes (conjunctivitis). These are usually followed by tiny white spots inside the mouth, called Koplik spots, then a characteristic red rash that starts on the head and spreads downwards. You should immediately contact your healthcare provider if you develop these symptoms, especially if you know you’ve been exposed or are not vaccinated. Call ahead before visiting a clinic to prevent potential spread.
I visited the Gresham WinCo on March 7 between 2 p.m. and 5 p.m. What specific steps should I take now?
If you were at the WinCo Foods store at 2511 SE 1st St. in Gresham on Saturday, March 7, 2026, between 2 p.m. and 5 p.m., it is crucial to contact your healthcare provider without delay. Inform them about your potential exposure. Your doctor can assess your immunity status based on your vaccination records, age, or past measles infection history. If you are eligible and within 72 hours of exposure, an MMR vaccine may be recommended, or immunoglobulin treatment within six days for high-risk individuals.
How effective is the MMR vaccine, and why is vaccination critical for community protection?
The MMR (measles, mumps, rubella) vaccine is extremely effective, providing about 97% protection against measles after two doses. Vaccination is critical for community protection through “herd immunity.” When a high percentage of the population (typically 93% or more) is vaccinated, it significantly reduces the likelihood of measles spreading, protecting vulnerable individuals who cannot be vaccinated, such as infants or those with compromised immune systems. This collective immunity prevents outbreaks and safeguards public health.
Conclusion
The recent confirmation of a Multnomah County measles case, tied to a Gresham WinCo exposure, highlights the ongoing need for public awareness and proactive health measures. While local health officials are actively managing the situation and assess the broader risk as low, the wider context of rising measles cases across Oregon and the nation underscores the importance of vigilance. Protecting our community against this highly contagious virus requires everyone to be informed, to check their vaccination status, and to act swiftly if potential exposure or symptoms arise. If you or your family members are not protected against measles, or have questions about recent exposures, consulting your healthcare provider is the most responsible and effective next step to ensure community health and safety.
