Measles case reported at Sea-Tac Airport, 4th WA case of 2025
Possible measles exposure at Seattle, WA airport
A Canadian traveler may have exposed others to measles at Sea-Tac Airport and a nearby hotel. Check your vaccination status and contact your healthcare provider if you develop symptoms between April 13 and April 28.
SEATAC, Wash. - Health officials in western Washington say a Canadian resident flew into the Seattle-Tacoma International Airport while infected with measles.
The case was recently confirmed, though the individual was in the Seattle area on April 6 and 7. This marks the fourth measles case in Washington this year.
The infected person was likely exposed while traveling abroad, according to Public Health - Seattle and King County. Their vaccine status is unknown.
Timeline:
Officials provided a timeline and list of locations where the individual was in western Washington:
- April 6, 5:45 p.m. to 10 p.m. - Sea-Tac Airport S Concourse (Gate S10), International Arrivals (Customs), Baggage Claim (Carousel 20), Gina Marie Hall (southernmost airport exit)
- April 6-7, 8:45 p.m. to 7 a.m. - Comfort Suites Tukwila Airport (7200 Fun Center Way)
- April 7, 4:45 a.m. to 7:30 a.m. - Sea-Tac Airport S Concourse (Gate S1)
The times include the estimated period when the individual was at the location and two hours after, as the measles virus can remain in the air for up to two hours after an infected person leaves the area.
Local health officials say the risk to the general public is low, as most people in King County have immunity to measles through vaccination. However, anyone who was potentially exposed is asked to remain up to date on the MMR vaccine, and to contact a healthcare provider if you develop an illness with fever or an unexplained rash.
Those exposed and not immune to measles would likely become sick between April 13-28. If you think you were exposed and develop symptoms, avoid potentially spreading the disease by calling a clinic or hospital first before going in person.
"Measles is highly contagious and if you don’t have immunity, you can get it just by being in an area where a person with measles has been," said Elysia Gonzales, Medical Epidemiologist for Public Health – Seattle & King County. "We’ve seen an increase in measles cases around the world and in the U.S., so it’s an important time to check your vaccination status and get vaccinated if you aren’t protected."
First WA measles case of 2025 confirmed in King County infant
Public health officials have listed several locations in Seattle and the Eastside where the infected infant was present while contagious.
Learn more about measles on the Public Health - Seattle and King County website.
The Source: Information in this story is from a blog and social media posts by Public Health - Seattle and King County.
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