Oregon confirms first measles cases of 2026, public urged to review vaccinations
Lead: Oregon health authorities confirmed the state’s first measles diagnoses of 2026 on two people in Linn County and have begun contact investigations. Public exposure windows include the Lebanon Community Hospital emergency department on Jan. 6–7 and the Albany General Hospital emergency department on Jan. 7. Officials say they are working to notify potential contacts and are urging residents to check MMR vaccination status and call ahead before visiting medical facilities. The Oregon Health Authority (OHA) has mobilized local public health staff to trace exposures and advise those at risk.
Key takeaways
- Two measles cases were confirmed in Linn County, Oregon, in early January 2026; both are under investigation by OHA and Linn County Public Health.
- Public exposure sites: Lebanon Community Hospital ED on Jan. 6 from 8:53 p.m. to Jan. 7 at 7:00 a.m., and Albany General Hospital ED on Jan. 7 from 4:59 a.m. to 8:15 a.m.
- Measles can linger in the air for up to two hours; symptoms typically appear 7–21 days after exposure.
- Two doses of MMR vaccine provide about 97% protection against measles; unvaccinated people in a room with measles have about a 90% chance of infection.
- Oregon reported a record 9.7% nonmedical exemption rate among kindergartners for the 2024–2025 school year, up from 8.8% in 2024.
- High-risk groups include infants, young children, adults over 20, pregnant people, and people with weakened immune systems.
Background
Measles was largely controlled in the United States after the vaccine introduction in 1963, but imported cases and local transmission have re-emerged in recent years. Oregon confirmed its first 2025 measles case in June, a person hospitalized in the Portland area who acquired the infection during international travel. The state has also seen a climb in nonmedical kindergarten exemptions: 9.7% for 2024–2025, following 8.8% in 2024, which contributed to Oregon’s high exemption ranking nationally per CDC reporting.
Public health officials view rising exemption rates and increased global case counts as factors that raise the chance of imported cases sparking local spread. Measles is among the most contagious viral diseases; it spreads through respiratory droplets and can persist in enclosed airspace for up to two hours. Past U.S. public-health gains reduced cases and deaths dramatically, but localized immunity gaps can allow outbreaks when the virus is reintroduced.
Main event
The Oregon Health Authority and Linn County public-health teams confirmed two measles cases in early January 2026 and identified two emergency-department exposure windows. Lebanon Community Hospital’s emergency department exposure began at 8:53 p.m. on Jan. 6 and continued through 7:00 a.m. on Jan. 7; Albany General Hospital’s ED exposure occurred on Jan. 7 from 4:59 a.m. to 8:15 a.m. Investigators are working to identify and notify people who were present during those time frames.
Officials advise anyone who was at the listed locations during the exposure windows to check vaccination records and watch for measles symptoms — fever, cough, runny nose, red eyes and rash — which typically appear within 7 to 21 days. People with symptoms are asked not to walk into clinics or ERs unannounced; instead, they should call ahead so staff can arrange a safe entry plan to prevent further exposures. Contact tracing and targeted vaccination outreach are standard responses while the source of infection is being determined.
State medical leadership emphasized prevention through vaccination and provider outreach. OHA’s communicable-disease team has been coordinating with Linn County to prioritize testing, isolate confirmed cases, and offer post-exposure guidance. Hospital infection-control teams were notified to review staff and patient records against the exposure windows and take appropriate precautions.
Analysis & implications
The identification of two cases in a single county early in the year highlights the fragility of herd protection where immunization coverage has slipped. With nearly 10% of Oregon kindergartners holding nonmedical exemptions in 2024–2025, pockets of susceptible people remain large enough to sustain transmission if measles is introduced. That vulnerability is compounded by the virus’s high transmissibility: an unvaccinated person in an exposed room faces roughly a 90% infection risk.
Measles carries risks beyond the acute illness. Immune amnesia, a documented effect of measles infection, can erode prior immunity to other pathogens and increase susceptibility to other infectious diseases for months to years after recovery. Severe complications—acute encephalitis in about 1 per 1,000 cases and death in 1–3 per 1,000 child cases—mean even small outbreaks can impose disproportionate clinical burden and long-term consequences.
Clinically and operationally, even a two-case cluster can strain local hospitals if cases require isolation or admission and if staff exposures necessitate furloughs. Public messaging and swift post-exposure actions (vaccine clinics, targeted immunization verification, and call-ahead policies for symptomatic patients) reduce spread and protect high-risk patients. On the policy level, the cluster will likely renew debate over school exemption rules and school-entry vaccine documentation.
Comparison & data
| Year | Oregon nonmedical kindergarten exemption rate |
|---|---|
| 2024 | 8.8% |
| 2024–2025 | 9.7% |
The table highlights a rising exemption trend that public-health officials cite as a factor increasing outbreak risk. Nationally, periodic international spikes in measles cases raise the likelihood that unvaccinated travelers will reintroduce the virus. Local rates below herd-immunity thresholds create susceptible clusters even where statewide coverage appears moderate.
Reactions & quotes
Before and after the cluster announcement, state communicable-disease leaders urged vaccination and alertness. Local officials described the public-notification steps and said they would keep the community informed as investigations proceed.
“Measles is here in Oregon,”
Dr. Howard Chiou, OHA medical director for communicable diseases and immunizations
Dr. Chiou’s brief statement underscores OHA’s call for providers and patients to verify immunization status. Health officials reiterated that checking records and offering timely MMR doses to eligible people are the most effective immediate actions to reduce spread.
At the federal and political level, Oregon’s senators urged action after 2025 measles deaths drew national attention. They pressed HHS to coordinate measures to limit spread and strengthen vaccination outreach.
“Vaccines not only protect individual children from measles, but also contribute to community immunity,”
U.S. Senators Ron Wyden and Jeff Merkley (letter to HHS, March 2025)
The senators’ appeal followed the U.S. reporting of measles-related deaths in 2025 and aimed to accelerate cross-agency response. Their remarks and subsequent public discussion stress that prevention requires both provider engagement and public access to vaccination services.
Unconfirmed
- The source of the two confirmed Linn County cases (whether linked to international travel or local transmission) has not been publicly confirmed by OHA as of the latest update.
- There is no publicly confirmed information on secondary cases stemming from these exposures; contact tracing is ongoing and numbers could change.
Bottom line
Two confirmed measles cases in Linn County in early January 2026 are a reminder that measles remains a near-term threat when immunity gaps exist. Public-health response—rapid contact notification, testing, and offering MMR vaccination for those not up to date—can limit spread and protect high-risk individuals. Residents who were at the named exposure locations during the specified times should check their vaccination status and call health providers before seeking care if symptomatic.
Longer term, the cluster highlights policy and programmatic challenges: rising nonmedical exemptions, the role of travel in reintroducing measles, and the need to maintain high two-dose MMR coverage to prevent immune-amnesia–driven increases in other infections. Officials and communities will likely debate measures to close immunity gaps while health systems prepare for the operational impacts of any uptick in cases.