Sexual behaviour and HIV sero-discordance among HIV patients receiving HAART in rural Uganda.

Globally, HIV sero-discordance is a major public health problem, due to increased risk of HIV transmission to HIV-negative partners. From January to August 2009, we assessed the sexual behaviour of HIV-infected patients attending an HIV treatment centre in Uganda and analysed characteristics associated with HIV sero-discordance. Of the 278 respondents, 256 (92.1%) were female, 218 (78.1%) were on antiretroviral drugs and 107 (38.7%) belonged to a sero-discordant couple. In the prior 3 months, 238 (88.5%) had more than one sexual partner and 98 (35.8%) had acquired new sexual partners. Only 171 (61.5%) had ever disclosed sero-status to main sexual partners. Participants who had changed sexual partners in the previous 3 months were more likely to be sero-discordant (OR 1.87, 95% CI 1.13, 3.11). Respondents who used condoms during their last sexual intercourse and those currently on ARVs were significantly less likely to be sero-discordant (OR 0.52 95% CI 0.28, 0.96 and OR 0.52 95% CI 0.30, 0.94, respectively). Only disclosure of sero-status was independently though inversely associated with discordance (adjusted OR 0.41, 95% CI 0.20, 0.64). Our findings indicate that HIV patients continue exhibiting high risk behaviour characterised by changing sexual partners, having multiple sexual partners and non-use of condoms.