Combination Primary Care and Prevention Services for Women Who Inject Drugs and Exchange Sex in Seattle, Washington

The investigators will implement a non-randomized observational clinical trial that will include a pop-up clinic for women who inject drugs (WWID) near venues for exchange sex and drug use in north Seattle. The pop-up clinic will be housed within a van and serve as a research extension of the SHE Clinic, a Harborview Medical Center run clinic for women who exchange sex and use drugs in north Seattle. Through the implementation of the pop-up clinic, the investigators will aim to assess: 1. The impact of the pop-up clinic on uptake and sustained use of HIV pre-exposure prophylaxis (PrEP) and medications for opioid use disorder (MOUD) among WWID. 2. The impact of point of care (POC) sexually transmitted infection (STI) testing on STI treatment completion rates. 3. The acceptability and feasibility of providing HIV prevention care for WWID and exchange sex in a pop-up van clinic.