Overall, the risk-behaviours associated with the transmission of BBSTIs, knowledge of HIV and HCV, patterns of testing and treatment for these infections, and the self-reported rates of infections since admission were similar for both Aboriginal and non-Aboriginal men. [...] Men entering federal penitentiaries report a high rate of drug- and sex-related risk-behaviours during their last six months in the community: 60% of Aboriginal men and 56% of non- Aboriginal men used non-injection drugs, 24% of Aboriginal men and 22% of non-Aboriginal men injected drugs, and 84% of Aboriginal and non-Aboriginal men had oral, vaginal, or anal sex. [...] Despite the high-risk characteristics of the population entering federal penitentiaries, a minority of men report engaging in risk-behaviours recently in a penitentiary: 37% of Aboriginal men and 33% of non-Aboriginal men used non-injection drugs, 19% of Aboriginal men and 16% of non-Aboriginal men injected drugs, and 18% of Aboriginal men and 16% of non-Aboriginal men had oral, vaginal, or anal s [...] In regards to recent demand for harm-reduction items in a penitentiary, 47% of Aboriginal men and 56% of non-Aboriginal men who were sexually active recently in a penitentiary reported an attempt (successful or unsuccessful) to get condoms, lubricant and/or dental dams, and 58% of Aboriginal men and 56% of non-Aboriginal men reported an attempt (successful or unsuccessful) to get bleach. [...] Among men ever tested for HIV and/or HCV infections, 2.5% of Aboriginal men and 4.8% of non-Aboriginal men reported being HIV-positive and 34.3% of Aboriginal men and 29.4% of non-Aboriginal men reported being HCV-positive.