Rahman N, Ghanem KG, Gilliams E, et al. - Researchers performed a comparison concerning risk factors and STIs between self-identified women who have sex with women (WSW), women who have sex with both men and women (WSB) and women who have sex with men only (WSM) attending two STI clinics in Baltimore, Maryland. They analyzed visits from 1,095 WSW, 1,678 WSB and 2,773 WSM. Relative to WSM, WSB were noted to have equal or higher test positivity for all STIs except urogenital chlamydia, have more sexual partners, be more likely to engage in transactional sex and be more likely to report drug use and binge drinking. Test positivity for urogenital gonorrhoea (Neisseria gonorrhoeae) and chlamydia (Chlamydia trachomatis) was lower but for trichomonas (Trichomonas vaginalis) was comparable among WSW vs WSM or WSB; WSW reported higher binge drinking and comparable substance use as WSM. For STI diagnosis, younger age and cocaine use were predictive only in WSM.