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Differences in the social networks of ethnic Vietnamese and non-Vietnamese injecting drug users and their implications for blood-borne virus transmission

机译：越南和非越南注射吸毒者社交网络的差异及其对血传播病毒传播的影响

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The social networks of 49 ethnic Vietnamese injecting drug users (IDUs) and 150 IDUs of other ethnicities recruited in Melbourne, Australia, were examined for ethnic differences in distribution of hepatitis C virus infection risk using social network analysis and molecular epidemiology. Vietnamese IDUs were more highly connected than non-Vietnamese IDUs, and more likely to be members of dense injecting sub-networks. More related infections were detected in IDUs with discordant ethnicities than were captured in the social network data; nonetheless, most dyads and most IDU pairs with related infections had matching ethnicity, confirming that mixing was assortative on that criterion. Mixing was not obviously dissortative by risk; low-risk Vietnamese IDUs injected more frequently than did correspondingly low-risk non-Vietnamese IDUs, but results for other measures were reversed or equivocal. Network measurements suggest that ethnic Vietnamese IDUs are at elevated risk of blood-borne infection, a conclusion supported by their relatively high HIV prevalence.
机译：使用社交网络分析和分子流行病学方法，对在澳大利亚墨尔本招募的49个越南裔注射吸毒者（IDU）和150个其他种族的IDU的社交网络进行了丙型肝炎病毒感染风险分布的种族差异调查。越南的注射毒品使用者比非越南的注射毒品使用者之间的联系程度更高，并且更有可能是密集注入子网的成员。在种族不和谐的注射吸毒者中发现的相关感染比在社交网络数据中捕获的要多。但是，大多数双胞胎和大多数IDU对与相关感染具有相同的种族，这证明混合在该标准上是可分类的。混合并没有明显地分散风险。低风险的越南注射毒品使用者比相应的低风险的非越南注射毒品使用者注射得更多，但其他措施的结果却相反或模棱两可。网络测量表明，越南IDU族人群的血源性感染风险较高，这一结论得到了其相对较高的HIV感染率的支持。

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