Canadian was infectious with measles during western WA visit

A Canadian resident with measles traveled through King and Snohomish counties, including Seattle-Tacoma International Airport, from April 30 to May 3, 2025, potentially exposing many individuals. The traveler’s vaccination status remains unknown, raising concerns among public health officials. This is part of a troubling trend, as Washington state has reported five measles cases among residents this year and over 1,000 cases nationally. Meagan Kay, a Medical Epidemiologist, highlighted the significant resurgence of measles, indicating that 2025 could see the highest number of cases since the early 1990s. Health authorities have provided a list of exposure sites and urge residents to verify their vaccination status.

The case is not linked to previous local outbreaks but underscores the importance of vaccination amid rising measles cases in the U. S. Public health officials recommend vaccination, especially for those who may have been in the areas visited by the infected traveler. For further details on measles prevention, individuals can consult the King County measles information page.