OLYMPIA, Wash. — An online tool by the Washington State Department of Health (DOH) helps people track measles exposures across the state.
This map compiles data from local health departments into a user-friendly platform and allows users to see where someone who tested positive for measles has been.
Each location is marked with an orange dot, indicating potential exposure sites. These sites are active for 21 days after the exposure date, which is the period during which people should monitor themselves for symptoms.
The Department of Health updates the map regularly with information from local health jurisdiction press releases.
As of January 21, 2026, the map shows 11 active locations including those reported in a Snohomish County outbreak early this month along with exposures in Kittitas County.
The map can be found here.
