Epidemiology of hepatitis C virus infection among injection drug users in China: Systematic review and meta-analysis

被引:120
|
作者
Xia, Xian [1 ]
Luo, Jun [1 ]
Bai, Jianling [1 ]
Yu, Rongbin [1 ]
机构
[1] Nanjing Med Univ, Sch Publ Hlth, Dept Epidemiol & Biostat, 140,Hanzhong Rd, Nanjing 210029, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Hepatitis C virus (HCV); Infection; Injection drug users (IDUs); Prevalence; Meta-analysis; Systematic review; China;
D O I
10.1016/j.puhe.2008.01.014
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
Objectives: Injection drug use (IDU) is the predominant mode of hepatitis C virus (HCV) transmission in China. This paper aims to provide a comprehensive and reliable tabulation of available data on the epidemiological characteristics and risk factors for HCV infection in injection drug users (IDUs) in China to help inform prevention programmes and guide future research. Study design: Data from articles and reports according to pre-defined criteria on HCV infection rates among IDUs of different regions, genders, ethnic backgrounds and risk factors (injecting practice, needle sharing, long duration, sex behaviour and co-infection status) were abstracted and pooled by meta-analysis. A systematic review was constructed based on both pooled data and representative viewpoints. Methods: Ninety-five percent confidence intervals (CI) of infection rates were calculated using the approximate normal distribution model. Odds ratios and 95% Cl were calculated by fixed or random effects models. Publication bias was examined using Begg's test and Egger's test. Data manipulation and statistical analyses were undertaken using STATA 7.0 and RevMan 4.2. Epi Info 3.4.3 was used for map construction. Results: The pooled prevalence of HCV infection among IDUs in China was 61.4% (95% CI 55.7-67.2%), and the epidemic was most severe in Hubei, Yunnan, Guangxi, Hunan and Xinjiang. No significant difference was found in HCV infection rates between mate and female IDUs. A significant association was found between HCV infection and ethnic-minority status. IDUs were 9.24 times more likely to be infected with HCV than non-IDUs, while non-IDUs were more likely to be infected with HCV than members of the general population and other risk populations. There was no significant difference in the risk of HCV infection for needle-sharing IDUs and non-needle-sharing IDUs. A longer duration of IDU was associated with increased HCV prevalence. High-risk sexual practices were strongly associated with drug injection behaviours. Co-infection with human immunodeficiency virus (HIV) greatly increased the probability of HCV infection among IDUs, while the probability of hepatitis B virus infection remained similar for HCV-positive and HCV-negative IDUs in China. Conclusions: IDU continues to fuel the HCV/HIV epidemics spreading throughout China. Many pragmatic strategies are being implemented but need further evaluation. (C) 2008 The Royal Institute of Public Health. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:990 / 1003
页数:14
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