PT - JOURNAL ARTICLE AU - Kailyn Young AU - Willem Van Der Mei AU - Joy Scheidell AU - Typhanye Dyer AU - Christopher Hucks-Ortiz AU - Russell Brewer AU - Macregga Severe AU - Andrea Troxel AU - Jay Kaufman AU - Maria Khan TI - P817 Longitudinal associations between recent incarceration and STI/HIV risk: the role of prior trauma in exacerbating risk AID - 10.1136/sextrans-2019-sti.863 DP - 2019 Jul 01 TA - Sexually Transmitted Infections PG - A344--A344 VI - 95 IP - Suppl 1 4099 - http://sti.bmj.com/content/95/Suppl_1/A344.1.short 4100 - http://sti.bmj.com/content/95/Suppl_1/A344.1.full SO - Sex Transm Infect2019 Jul 01; 95 AB - Background Black men who have sex with men (BMSM) disproportionately report a history of traumatic life events including incarceration. Incarceration, by increasing distress and psychopathology, may increase risk-taking and infection. Pre-incarceration trauma may exacerbate the impact of incarceration on STI/HIV risk among BMSM.Methods Using data from HIV Prevention Trials Network (HPTN) 061, we used inverse probability of treatment weighted Poisson regression models to estimate risk ratios (RRs) and 95% confidence intervals (CIs) for associations between recent incarceration and incident STI (gonorrhea, chlamydia, and syphilis) and sexual risk behavior (sex trade defined as selling/buying sex, multiple partnerships, condomless sex) measured six months after incarceration assessment (n=1189). We tested the significance of interaction terms between incarceration and trauma to assess whether associations differed significantly by trauma history (e.g., experiencing a robbery, natural disaster, sexual/physical assault).Results Approximately 93% reported at least one traumatic event and 14% had been recently incarcerated. Incarceration was associated with STI among those with prior trauma (RR: 1.10, 95% CI: 1.00–1.22) but not among those with no prior trauma (RR: 0.91, 95% CI: 0.75–1.09); associations differed significantly (interaction term p=0.036). Incarceration was linked to increased risk of sex trade involvement among those with prior trauma (RR: 1.08, 95% CI: 1.00–1.15) and decreased risk among those with no prior trauma (RR: 0.95, 95% CI: 0.90–1.00) (interaction term p=0.002). Incarceration was associated with increased risk of multiple partnerships among those with prior trauma (RR: 1.24; CI: 1.10, 1.40) but not among those with no prior trauma (RR: 0.85, 95% CI: 0.32–2.25), though the RRs were not significantly different (interaction term p=0.224). Incarceration was not associated with condomless sex, regardless of prior trauma.Conclusion BMSM with prior trauma appear to face disproportionate vulnerability to STI/HIV risk after release from incarceration. Trauma-informed STI/HIV care and prevention interventions for BMSM with recent justice involvement are warranted.Disclosure No significant relationships.