Incidence and risk factors on HIV infection among injection drug users in Dehong prefecture area of Yunnan province
10.3760/cma.j.issn.0254-6450.2009.12.003
- VernacularTitle:云南省德宏州静脉注射毒品者HIV新发感染率及其危险因素研究
- Keywords:
Human immunodeficiency virus;
Incidence;
Injection drug users;
Cohort study
- From:
Chinese Journal of Epidemiology
2009;30(12):1226-1229
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the incidence and risk factors on HIV infection among injection drug users(IDU)in Dehong prefecture area of Yunnan province.Methods An epidemiological cohort of HIV-negative IDU had been developed and followed since October,2004.HIV new infections and related behaviors had been investigated every six months.Results By the end of 2008,760 HIV-negative IDU had been recruited and followed for a total of 1153.6 person-years.47 new HIV infections were identified,with an overall incidence of 4.07/100 person-years during the follow-up period.The HIV incidence was 4.45/100 person-years during 2004-2006,4.50/100 person-years in 2007 and 2.54/100 person-years in 2008.Both the behavior of drug injection and the HIV incidence among the cohort had substantially decreased during the follow-up period.Multiple regression analysis using Cox proportional hazard model indicated that people with Jing-po ethnicity(Hazard ratio,HR=2.56,95% CI:1.06-6.19)and other minorities except for Dai(HR=3.26,95% CI:0.89-11.96)were at higher risk for HIV infection than the people with Han ethnicity.People injecting drugs with(HR=2.21,95%CI:0.98-5.25)or without(HR=5.27,95%CI:2.25-12.34)needle sharing were at higher risk for HIV infection than those reporting having no drug injection behavior during the follow-up period.Conclusion Both the behavior of drug injection and the HIV incidence among former IDU in Dehong prefecture area of Yunnan province had been decreasing during the four years.However,needle sharing remained the most important risk factor for HIV new infection among IDUs.IDUs with different ethnicities seemed to have different risks towards HIV infection.
