Measles case in traveler with possible exposures at Seattle-Tacoma International Airport  

cluster of measles viruses

Public Health – Seattle & King County is informing the community of a measles case in a Canadian resident who traveled through Seattle-Tacoma International Airport (SEA) on January 22, 2026. Those who are unsure of their measles vaccination status and were at the airport on January 22 should check the kingcounty.gov/measles website for more information.

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Measles case in visitor to King County: Possible exposures at Seattle-Tacoma International Airport 

cluster of measles viruses

Public Health – Seattle & King County was notified of a measles case in an adult who traveled on a connecting flight through Seattle-Tacoma International Airport (SEA) on November 11, 2025, and again on November 17, 2025. The individual is an out-of-state traveler and their vaccination status is unknown. If you are not immune to measles or don’t know your vaccination status, and were at the airport on November 11th or November 17th, please visit our measles webpage for specific information about potential areas of exposure within the airport.  

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New measles case in King County resident with link to previous case 

cluster of measles viruses

Public Health – Seattle & King County was notified of a confirmed measles case in a King County adult. The individual was on the same flight as a person with a confirmed case of measles that Public Health previously announced on October, 17, 2025. We believe this latest case was exposed to measles on this flight. This latest case was at Toyota of Renton, Valley Medical Center, YangGuoFu Malatang Restaurant and Disney on Ice at ShoWare Center during their infectious period.

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