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AbstractIntroductionTransgender women (TW) experience an increased risk of human immunodeficiency virus (HIV) acquisition. This study identified patterns of HIV awareness and prevention strategies used by TW who were not living with HIV.MethodsData were drawn from a baseline survey of the LITE Study, a multi‐site cohort of TW in Eastern and Southern United States (March 2018–August 2020). We conducted a latent class analysis to identify classes of HIV awareness and prevention strategies among TW who reported past 12‐month sexual activity (N = 958) using 10 variables spanning HIV knowledge, receipt and use of HIV prevention strategies, and sexual practices. Due to differences across the cohort arms, classes were estimated separately for TW enrolled in site‐based versus online study arms. We identified demographic characteristics, gender‐affirming indicators and HIV vulnerabilities associated with class membership.ResultsFour parallel classes emerged: class 1 "limited strategies—less sexually active" (15% and 9%, site‐based and online, respectively), class 2 "limited strategies—insertive sex" (16%/36%), class 3 "limited strategies—receptive sex" (33%/37%) and class 4 "multiple strategies—insertive and receptive sex" (36%/18%). Across all classes, condomless sex, pre‐exposure prophylaxis (PrEP)/post‐exposure prophylaxis (PEP) prevention knowledge and awareness were high but reported PrEP/PEP use was low. Compared with class 1, membership in class 4 was associated with being a person of colour (site‐based OR = 2.15, 95% CI = 1.15–4.00, online OR = 4.54, 95% CI = 1.09–18.81) increased odds of self‐perceived medium‐to‐high HIV risk (site‐based OR = 4.12, 95% CI = 2.17–7.80, online OR = 11.73, 95% CI = 2.98–46.13), sexually transmitted infections (STI) diagnosis (site‐based OR = 6.69, 95% CI = 3.42–13.10, online OR = 8.46, 95% CI = 1.71–41.78), current sex work (site‐based OR = 6.49, 95% CI = 2.61–16.11, online OR = 10.25, 95% CI = 1.16–90.60) and 2–4 sexual partners in the last 3 months (site‐based OR = 2.61, 95% CI = 1.33–5.13). Class 3, compared with class 1, had increased odds of current sex work partners (site‐based OR = 3.09, 95% CI = 1.19–8.07) and of having 2–4 sexual partners in the last 3 months (site‐based OR = 3.69, 95% CI = 1.85–7.39).ConclusionsTW have varied HIV awareness and prevention strategy utilization, with clear gaps in the uptake of prevention strategies. Algorithms derived from latent class membership may be used to tailor HIV prevention interventions for different subgroups and those reached through facility‐based or digital methods.

AbstractIntroductionTransgender women in the United States experience high HIV incidence and suboptimal Pre‐exposure prophylaxis (PrEP) engagement. We sought to estimate PrEP initiation and discontinuation rates and characterize PrEP discontinuation experiences among a prospective cohort of transgender women.MethodsUsing a sequential, explanatory, mixed‐methods design, 1312 transgender women at risk for HIV acquisition were enrolled from March 2018 to August 2020 and followed through July 2022 (median follow‐up 24 months; interquartile range 15–36). Cox regression models assessed predictors of initiation and discontinuation. In‐depth interviews were conducted among 18 participants, including life history calendars to explore key events and experiences surrounding discontinuations. Qualitative and quantitative data were integrated to generate typologies of discontinuation, inform meta‐inferences and facilitate the interpretation of findings.Results21.8% (n = 286) of participants reported taking PrEP at one or more study visits while under observation. We observed 139 PrEP initiations over 2127 person‐years (6.5 initiations/100 person‐years, 95% CI: 5.5–7.7). Predictors of initiation included identifying as Black and PrEP indication. The rate of initiation among those who were PrEP‐indicated was 9.6 initiations/100 person‐years (132/1372 person‐years; 95% CI: 8.1–11.4). We observed 138 PrEP discontinuations over 368 person‐years (37.5 discontinuations/100 person‐years, 95% CI: 31.7–44.3). Predictors of discontinuation included high school education or less and initiating PrEP for the first time while under observation. Four discontinuation typologies emerged: (1) seroconversion following discontinuation; (2) ongoing HIV acquisition risk following discontinuation; (3) reassessment of HIV/STI prevention strategy following discontinuation; and (4) dynamic PrEP use coinciding with changes in HIV acquisition risk.ConclusionsPrEP initiation rates were low and discontinuation rates were high. Complex motivations to stop using PrEP did not consistently correspond with HIV acquisition risk reduction. Evidence‐based interventions to increase PrEP persistence among transgender women with ongoing acquisition risk and provide HIV prevention support for those who discontinue PrEP are necessary to reduce HIV incidence in this population.