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目的：分析社区海洛因依赖者的HIV、HCV、梅毒等血源性传染病的感染状况，为采取针对性干预措施提供依据。方法：调查重庆市渝北区美沙酮门诊378例海洛因依赖者的一般人口学资料，并收集血液样本进行血清学检测，分析病人的人口学特征、感染状况和不同特征之间感染率的差异。结果：在调查的依赖者中，至少77.2%感染HIV、HCV和梅毒3种传染病中的1种，其中HIV、HCV与梅毒的感染率分别为1.85%、75.9%和12.2%。二分类的Logistic回归分析结果显示，年龄/共用注射器、是否注射以及性别分别是影响HIV、HCV和梅毒感染的危险因素。结论：重庆市渝北区社区海洛因依赖者HCV感染率较高，HCV和梅毒合并感染率较高，应积极对该人群开展感染者针具交换和心理行为干预。“,”Objective:To analyze the infection status of blood-borne infectious diseases such as HIV,HCV and syphilis among the community heroin abusers,to provide the basis for purposeful intervention measures. Methods:The general demographic information of 378 heroin abusers in Yubei District,Chongqing City was investigated,and the blood samples were collected for serology tests to an-alyze the differences on the features of the general demographic information,infection status,and the different infection rates among the heroin abusers. Results:The infect rate was 77. 2%(292/378)in the community heroin abusers infected at least one of the three kinds of viruses for HIV,HCV and syphilis,the infect rates of HIV,HCV and syphilis were 1. 85%(7/378),75. 9%(287/378)and 12. 2%(46/378),respectively. There were statistical significances for HCV infection rate among the factors of age,the current way of taking drug,sharing injector,injection or not,drug-tanking of spouse or sex partner(P﹤0. 05 or P﹤0. 001),of which the infection rates for factors of age from 30 to 40(86. 51%),injection and mouth-taking drug(95. 65%),injection(89. 05%),spouse or sex partner injection(91. 49%)were relatively high;there were statistical significances for syphilis infection rate among the factors of gen-der,marital status(P﹤0. 05 or P﹤0. 001),of which the infection rates for factors of female(21. 82%),cohabitation(36. 36%) were relatively high. The results of the binary logistic regression showed that age/sharing injector,injection or not,and gender were the danger factors of infecting HIV,HCV and syphilis,respectively. Conclusion:The infection rates of HCV and the HCV combined with syphilis among community heroin abusers in Yubei District,Chongqing City are relatively high. The hospital should actively carry out the needle-change work and psycho-behavioral intervention programs among the community heroin abusers.