Towards ‘reflexive epidemiology’: Conflation of cisgender male and transgender women sex workers and implications for global understandings of HIV prevalence

摘要

The HIV epidemic has had a widespread impact on global scientific and cultural discourses related to gender, sexuality, and identity. ‘Male sex workers’ have been identified as a ‘key population’ in the global HIV epidemic; however, there are methodological and conceptual challenges for defining inclusion and exclusion of transgender women within this group. To assess these potential implications, this study employs self-critique and reflection to grapple with the empiric and conceptual implications of shifting understandings of sexuality and gender within the externally recreated etic category of ‘MSM’ and ‘transgender women’ in epidemiologic HIV research. We conducted a sensitivity analysis of our previously published meta-analysis which aimed to identify the scope of peer-reviewed articles assessing HIV prevalence among male sex workers globally between 2004–2013. The inclusion of four studies previously excluded due to non-differentiation of cisgender male from transgender women participants (studies from Spain, Thailand, India, and Brazil: 421 total participants) increased the overall estimate of global HIV prevalence among “men” who engage in sex work from 10.5% (95% CI 9.4–11.5%) to 10.8% (95% CI 9.8–11.8%). The combination of social science critique with empiric epidemiologic analysis represents a first step in defining and operationalizing ‘reflexive epidemiology’. Grounded in the context of sex work and HIV prevention, this paper highlights the multiplicity of genders and sexualities across a range of social and cultural settings, limitations of existing categories (i.e., ‘MSM’, ‘transgender’), and their global implications for epidemiologic estimates of HIV prevalence.