HIV/AIDS annual and semi-annual reports
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.
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.