Two measles cases identified in King County connected to international travel  

Image of a measles virus

Public Health – Seattle & King County was notified on March 30, 2026, of measles cases in two adults who live in King County. The two individuals traveled together internationally where they were likely exposed to measles. Before they were diagnosed with measles, the two individuals visited multiple locations in Seattle, Kirkland and Bellevue while infectious.

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Where is COVID-19 transmitted in King County? Report shows most common exposure settings are homes, workplaces, community and social gatherings

A new report on outbreaks and exposure settings from Public Health—Seattle & King County describes settings where people may have become infected and finds the most common reported sources of potential exposure in recent weeks are in households, in a variety of community or social activities and gatherings, and in workplaces.

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New King County measles case

NOTE: All exposure locations in King County, including those from previous cases, are updated at kingcounty.gov/measles/cases. Public Health – Seattle & King County is investigating a new measles case with possible exposures in King County. The King County resident, a woman in her 40s, spent time at sites in King County before she knew she […]

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Measles case in traveler to King County

10 icons of people. One is red, the others are yellow. Text: Measles is highly contagious and spreads through the air when an infected person coughs or sneezes. It is so contagious that if one person has it, 9 out of 10 people of all ages around him or her will also become infected if they are not protected. Logo: CDC

Update (5.6.19): Latest locations/times are listed in the table below in bold. Original post: A Canadian resident from British Columbia who traveled to the Seattle area in late April 2019 has been diagnosed with measles. The traveler, a man in his 40s, has since recovered from his illness. Prior to arriving in King County, he […]

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