Demographics of transwomen who would be good candidates for use of PrEP, San Francisco, 2013.

• HIV-negative transwomen based on MSM guidelines from CDC = (1) adult, (2) HIV-negative, (3) any male partners in last 6 months, (4) not in primary partnership with HIV-negative man and one of the following: (a) any anal sex w/o condoms in last 6 months OR (b) any STI diagnosed in last 6 months OR (c) is in a primary partnership with someone who is HIV-positive• HIV-negative transwoman IDU (1) adult, (2) HIV-negative, (3) any non-prescription IDU in last 6 months, excluding hormones/fillers and one of the following: (a) any sharing of drug using equipment in past 6 months, OR (b) is at sexual risk (i.e. fit criteria for HIV-negative transwoman sexual risk)Demographics of transwomen who would be good candidates for use of PrEP, San Francisco, 2013.• 符合美国疾病控制与预防中心（CDC）男男性行为者（Men who have sex with men, MSM）指南的HIV阴性跨性别女性：(1) 成年人；(2) HIV检测阴性；(3) 近6个月内存在男性性伴侣；(4) 未与HIV阴性男性维持稳定伴侣关系，且满足以下任一条件：(a) 近6个月内发生无安全套肛交行为；(b) 近6个月内被确诊患有任意性传播感染（Sexually Transmitted Infection, STI）；(c) 与HIV阳性个体维持稳定伴侣关系 • HIV阴性跨性别女性注射吸毒者（Injecting Drug User, IDU）：(1) 成年人；(2) HIV检测阴性；(3) 近6个月内存在非处方注射吸毒行为（不含激素与填充剂注射），且满足以下任一条件：(a) 近6个月内共用过吸毒器具；(b) 存在性传播感染风险（即符合前述HIV阴性跨性别女性的性风险判定标准） 2013年旧金山地区适合使用暴露前预防用药（Pre-Exposure Prophylaxis, PrEP）的跨性别女性人群人口学特征