Addressing Risk Through Community Treatment for Infectious Disease and Opioid Use Disorder Now (ACTION) Among Justice-involved Populations

Inclusion Criteria: * Living in one of our research areas * Age 18 or older * Able to provide written informed consent in English or Spanish * Involvement with the criminal justice system within the last 6 months * Living with HIV or being at risk of acquiring HIV and willing to learn about PrEP * Willing to be tested for HIV (unless already confirmed via medical record) * Having a history of opioid and/or stimulant use within 12 months prior to being in a controlled setting and/or in the last 6 months within the community * Having a history of condomless sexual intercourse, STI diagnosis, and/or IDU within 6 months prior to being in a controlled setting and/or in the last 6 months within the community Exclusion Criteria: * Severe medical or psychiatric disability making participation unsafe * Unable to provide consent * Not remaining in the local area after release from custody * Being released to inpatient care * Potential risk to research staff