Oregon Records Fourth Measles Case This Month as Exposure at Clackamas County Hospital Triggers New WarningA measles outbreak in Oregon poses a real threat as health officials record the fourth case in the state this month. The latest outbreak in Clackamas County may affect individuals who visited Kaiser Permanente Sunnyside Medical Center on January 26. Exposure to the highly contagious virus would have occurred between 11.28 a.m. and 1.53 p.m., according to the Oregon Health Authority (OHA). Two Cases in Clackamas and Two in Linn CountyThe exposure is linked to a new measles case in Clackamas County and is the second case of the virus reported in the county in 2026. It was also not established if the infection was related to two reported cases of measles in Linn County on January 10.