Public Health – Seattle & King County

Was notified of a confirmed measles case in an adult who traveled through Seattle-Tacoma International Airport (SEA) on October 13, 2025. The individual is a resident of Arizona and traveled from an area with an active measles outbreak. The individual was unvaccinated.  If you are not immune to measles or don’t know your vaccination status, and were at the airport on October 13th, please visit our measles website for specific information about potential areas of exposure within the airport.