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Case investigation and contact tracing are essential strategies for limiting the spread of COVID-19, along with face coverings, social distancing, handwashing and testing.

Public Health's Case Investigation and Contact Tracing Team calls King County residents who have recently tested positive for COVID-19 ("cases"). And they call people who were exposed to COVID-19 ("contacts"). The phone calls include an explanation of isolation and quarantine guidelines, how to get testing and support services, and collecting information that helps Public Health's infection control programs.

To learn more about how this strategy works, please see our Public Health Insider blog King County's COVID-19 contact tracing efforts gain strength and related background and FAQ page.


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