Project Summary Women involved with the carceral system (WICS) are more at risk of HIV infection, substance use disorders, and overdose than their community-based counterparts. Pre-exposure prophylaxis (PrEP) has emerged as a powerful HIV-prevention tool and in combination with Medication for Opioid Use Disorder (MOUD) could significantly impact HIV and overdose risk. Stigma but factors uptake ersists as a principal factor shaping HIV and drug use risk the role of trauma and resiliency in combination with stigma is understudied. The intersection of these is i mportant to examine to effectively develop interventions to improve prevention service access and for women at high-risk of HIV and overdose after release from the carceral system. p Patient navigation holds strong potential to address multifactorial and complex barriers to PrEP and substance use treatment linkage and uptake WICS. In tandem with patient navigation, eHealth has the potential to improve healthcare engagement for this group of women. This between Links to parent use, providers/partners resiliency women post will and that appropriately expands the scope of the parent award and at intervention with administrative supplement will explore the relationship intersectional stigma, trauma, and resilience so that findings can be integrated into the PA- web-based i ntervention, an adjunct to patient navigation services proposed i n the parent award, ensure it meets the needs of these at-risk women. Specifically, we will build on our formative work i n the award (Aim 1) by: 1. Adding measures of intersectional stigma (HIV, carceral system involvement, drug race, etc.), trauma and resiliency into our existing survey with WICS (n=50); 2. Survey system who currently offer services to WICS to understand how intersectional stigma, trauma and affects l inkage and service delivery (n=50); and, 3. Conduct prospective in-depth i nterviews with who have been released from the carceral system immediately following jail release and three months release to understand how these factors positively or negatively affect service uptake over time (n=20). We then, 4 . Integrate findings into the PA-Links app and concept/user test with our Community Advisory Board women with l ived experience to ensure we are addressing important interpersonal and structural barriers interfere with service uptake and linkage (n=15) (parent Aim 2). the conclusion of this project we expect to have an that uniquely addresses intersectional stigma, trauma and resiliency, which can assist navigators linking WICS with PrEP and MOUD upon release. This administrative supplement These results will directly inform a future R01 clinical trial to test the efficacy of PA-Links for improving uptake of PrEP and MOUD.