OHA release - PORTLAND, Ore.—Oregon Health Authority (OHA) and Multnomah County health officials are warning the public about a location where people may have been exposed to measles.  People might have been exposed if they were at the following location at this date and time:  Legacy GoHealth Urgent Care, 2850 SE Powell Valley Road, Unit 100, Gresham, between 3:05 p.m. and 7:09 p.m. Sunday, July 26.  People who were at this location during this date and time should immediately contact their health care provider and let them know they may have been exposed to someone who has measles. The health care provider can determine whether you are immune to measles based on your vaccination record, age, or laboratory evidence of prior infection.  Families without a primary care provider can establish care at any of Multnomah County's seven primary care clinics or nine student health centers (based at high schools but open to anyone ages 5-18) by calling 503-988-5558 to make a new patient appointment.