Testing an Integrated Bio-Behavioral Primary HIV Prevention Intervention Among High-Risk People Who Use Drugs

Inclusion Criteria: * Meet DSM-V criteria for opioid-dependence and are enrolled in methadone maintenance drug treatment at the APT Foundation, Inc. * Were confirmed to be HIV-negative and started on PrEP in the past week * Report unsafe injection drug use practices or unprotected sex within the past 3 months * Have a cell phone * Are able to read and understand the questionnaires, ACASI, and informed consent form * Available for the full duration of the study with no anticipated circumstances impeding participation (e.g., pending charges, jail term). Exclusion Criteria: * Have an untreated bipolar or psychotic disorder * Are actively suicidal or homicidal as assessed by trained research staff under the supervision of a licensed clinical psychologist * Cannot speak English