People who visited Kaiser Permanente Sunnyside Medical Center’s emergency department last weekend may have been exposed to measles, Oregon health officials said Wednesday. The possible exposure is linked to a newly confirmed measles case in Clackamas County, the second reported in the county this year, according to the Oregon Health Authority. Health officials said anyone who was in the emergency department at Kaiser’s Sunnyside Medical Center, 10180 S.E. The latest infection marks the state’s fourth confirmed measles case of 2026. Oregon had just one confirmed measles case last year.