Abstract
People involved in commercial sex are thought to be at high risk for human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS) transmission. To explore the characteristics of female sex workers’ (FSWs) sexual networks and how FSWs and their sex partners could serve as ‘bridges’ in HIV/AIDS transmission, egocentric sexual networks (where a subject is asked to identify his or her sexual contacts and their relationships) of 66 FSWs in Xi'an city, Shaanxi Province of China, were studied. Convenience sampling was used to collect FSWs’ socio-demographic and sexual behavior data, which we analyzed using social network and descriptive statistical methods. Results show that some egocentric sexual networks were connected by sex partners, and these were integrated into several components of a sexual network. According to centrality indicators, FSWs and their commercial sex partners (especially regular clients) served as key nodes within high-risk groups and as bridges between high-risk groups and the general population. The cluster of high-risk groups with cohesive sub-networks had larger network size (P < 0.001), more complex network structures, and more high-risk members (P < 0.05) than other isolated networks. The sexual network of FSWs was characterized by multiple sexual relations (680), unstable relationships (50.15%), and a high rate of inconsistent condom use with non-commercial sex partners (31.22%). By linking commercial and non-commercial sexual networks, the FSWs and their clients can become effective bridges for HIV/AIDS spread from high-risk groups to the general population.
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