 The rationale for Peer Navigators PNs working with HIV-infected IDUs is that similar backgrounds and shared experiences will strengthen relationships and provide PNs access and credibility not easily achieved by medical professionals. HIV infection among IDUs is transmitted through drug-using networks. However, these same peer networks have also served as the vehicle for several peer-driven interventions with demonstrated efficacy in reducing HIV risk behavior, often outperforming traditional approaches. With lower-income, poorly educated, predominantly minority HIV-infected IDUs, investigators propose that having a knowledgeable peer provide counsel and support during entrance to care and ART initiation, and remain a stable presence into the maintenance phase could directly addresses many of the barriers encountered by this community. 