Measles case confirmed in Washington, officials warn

Public health officials in Washington state issued a warning to residents about a Canadian traveler who was contagious with measles and visited various public locations, including the Seattle-Tacoma International Airport. The traveler’s vaccination status remains unknown, but they traveled through the airport and visited several places in Renton, Bellevue, Seattle, Everett, and Woodinville between April 30 and May 3, according to a King County news release.

Measles can spread before the appearance of a rash, and the virus can linger in the air for up to two hours after a contagious person leaves the area. The Canadian individual received the measles diagnosis after traveling through the region.

The potential exposure sites where the traveler visited include Seattle-Tacoma International Airport, Bellevue Market Place at Factoria Shopping Center, Chateau Ste. Michelle Winery, Home Depot in Redmond, Dunn Lumber in Renton, Genki Sushi in Renton, Topgolf Renton Sport Bar and Restaurant, Pho Mignon in Kirkland, Kobo at HIGO Art Gallery, Uwajimaya Seattle Asian Market, Stoup Brewing, Spicy Style of Sichuan, a hotel, and three fitness centers.

Although this case is not linked to any previous local measles cases, Public Health – Seattle and King County responded to two other measles cases this year from non-residents, bringing the total number of measles cases in Washington state residents to five this year.

Meagan Kay, a medical epidemiologist for Public Health – Seattle and King County, highlighted a significant resurgence of measles in the U.S. and globally. With over 1,000 cases reported nationally so far this year, 2025 is on track to have the highest number of measles cases in the U.S. since the early 1990s. Kay emphasized the importance of checking vaccination status and getting vaccinated if not already protected.

Officials advised individuals who were in the potentially affected locations to verify their measles vaccination status and contact a healthcare provider promptly if they experience an illness with fever or an unexplained rash. This serves as a reminder for everyone to stay vigilant and prioritize their health during this measles resurgence period.