New measles case identified in Snohomish County infant

April 2, 2025.Reading time 10 minutes.

Snohomish county reported a positive measles case in a Snohomish County infant. The infant was likely exposed to measles during recent travel abroad. People who were at certain locations in Snohomish and King counties may have been exposed to measles. Read the blog for locations of potential exposure.

Second measles case identified in Washington state

March 18, 2025.Reading time 5 minutes.

We have identified a second case of measles in Washington state. This case is linked to a previous case of measles in King County from late February. The individual was not in any public spaces while infectious.

First measles case of 2025 in Washington state identified in a King County infant

February 27, 2025.Reading time 9 minutes.

We have identified a new case of measles in an infant in King County. People who were at certain locations in King County may have been exposed. People who are vaccinated are very well protected. See full blog for a list of exposure locations:

Potential exposure to measles from traveler at Seattle – Tacoma International Airport

January 16, 2025.Reading time 7 minutes.

We have confirmed a new case of measles in an individual who traveled through Seattle-Tacoma International Airport (SEA) while infectious.

Possible measles exposure at multiple locations in King County

July 3, 2024.Reading time 8 minutes.

Public Health – Seattle & King County is investigating a confirmed measles case in an adult with recent international travel. The individual was at multiple locations in Bellevue, Seattle, and Woodinville while infectious. Anyone at certain locations during the time span when the individual was there may have been exposed to measles.

Possible measles exposure at Franciscan Urgent Care- West Seattle

June 14, 2024.Reading time 8 minutes.

Public Health – Seattle & King County is informing the community of a confirmed measles case in a child with possible exposures at Franciscan Urgent Care – West Seattle.