Background: Men reporting same-sex behaviors are disproportionately impacted by sexually transmitted infections (STIs). Differences in clinical characteristics and STIs in men who have sex with men only (MSMO), with men and women (MSMW), and with women only (MSW) are not well described.
Methods: First visits to 2 Baltimore City STI clinics 2011-2016 from MSMO and MSMW compared with an age-matched random sample of MSW were analyzed.