Serosorting and Sexual Risk for HIV Infection at the Ego-Alter Dyadic Level: An Egocentric Sexual Network Study Among MSM in Nigeria

December 2016 - Behavioral Prevention

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Rodriguez-Hart, C., Liu, H., Nowak, R.G. AIDS and Behavior (February 2016) 20(11): 2762–2771, doi: 10.1007/s10461-016-1311-3.

The study examined participation in seroconcordant sexual relationships among 433 Nigerian men who have sex with men (MSM) and up to 5 of their sexual partners; and analyzed HIV infection risk among serodiscordant versus seroconcordant partners. Participants responded to a questionnaire to provide information on their demographics, HIV testing history, discussions about HIV status with sexual partners, sexual behaviors, and drug use. Results showed that 220 MSM knew their HIV status before the study; 95 were HIV-positive. Four men reported only participating in seroconcordant relationships, while 91 reported serodiscordant sexual activity with at least one of their sexual partners. Of the 125 participants who knew they were HIV-negative, 36 reported only participating in sexual activity with HIV-negative partners; 89 reported having sex with at least one HIV-positive partner. The majority of the 220 MSM who knew their HIV status reported sexual activity with both HIV-negative and HIV-positive partners; however, in 66.1 percent of encounters, participants did not know their partner's HIV status. Serodiscordant couples were less likely to use condoms, and more likely to have casual sex and inject drugs. The authors said that these findings demonstrated the importance of promoting HIV status awareness for oneself and partners and of encouraging safer sexual activity.

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