Skip to main content
King County Courthouse Third Avenue entrance closed until January 1, 2020. Please use alternative routes.  
King County logo
These reports include data tables, figures, and feature articles describing the local and state-wide epidemiology of HIV and AIDS in King County and Washington state. Each issue also includes a report from the Seattle HIV/AIDS clinical trials units with a table of studies open for enrollment.

2019 Annual Report

In 2018, King County experienced its largest one-year increase in the number of new HIV diagnoses since 2002 (218 cases in 2018 vs. 162 in 2017). This increase was driven by a 400% increase in the number of new HIV diagnoses among persons who inject drugs (PWID), while the number of new diagnoses in persons with other risks, including men who have sex with men (MSM) who do not inject drugs, remained stable. WA also experienced a one-year increase in new HIV cases (402 vs. 371) that was attributable to an increase among PWID.

2019 HIV/AIDS Epidemiology Annual Report