Women in resource-constrained, postdisaster, urban enclaves, such as Haiti’s Cité Soleil, are at risk for nonpartner sexual violence (NPSV) by multiple perpetrators, and subsequently, psychological trauma and sexually transmitted infections (STIs), including HIV/AIDS. These biopsychosocial risks suggest that NPSV victims may benefit from an adapted evidence-based intervention for sexually transmitted infection (EBI-STI) that includes a trauma component. Yet there is a dearth of knowledge on trauma symptoms experienced by victims in Haiti.