Yuva Sath: A Peer-led Behavioral Intervention to Support Substance Use Treatment and HIV Prevention Among Young People Who Inject Drugs in India

The goal of this pilot randomized controlled trial is to learn if Yuva Sath, a youth-tailored peer-led behavioral intervention, can support substance use treatment engagement and HIV prevention among young people who inject drugs in India. The main questions it aims to answer are: * Is Yuva Sath feasible and is it acceptable to young people who inject drugs in India ? * Can Yuva Sath improve engagement in substance use treatment, increase use of HIV prevention services and decrease substance use and risk behaviors among young people who inject drugs in India ? Researchers will compare participants who receive the Yuva Sath behavioral intervention to participants who do not to see if the behavioral intervention improves substance use treatment engagement and HIV prevention. Participants will: * Receive a total of 6 one-on-one sessions, and weekly phone text check-ins from peer counselors over a course of 6 months. * Complete monthly random urine drug screens * Complete in-person study questionnaires every 3 months * Report substance use and risk behaviors weekly to peer counselors through a brief phone text message survey