(Portland, OR) -- The Oregon Health Authority has issued a measles exposure warning for the Kaiser Permanente Sunnyside Medical Center Emergency Department. Anyone who was at the hospital's Emergency Department on January 26th from 11:28 a.m. to 1:53 p.m. and isn't protected against measles could have been exposed. They should contact their health care provider. This is the second measles case diagnosed in Clackamas County this year.