Up until HIV facilitated a study of these marginalised people, there was no awareness of Lesbian, Gay, Bisexual and Transgender (LGBT) community. But slowly awareness began to come out in the late 90s and HIV has been a key player in highlighting the issue. From a clinical explanation that HIV is a virus infected by coming into contact with bodily fluids, studying sexual minorities and their behaviour became an anthropological, social, behavioural study, with a scientific approach. We had to deal with sexuality and sexual behaviour.