Objective: To estimate human immunodeficiency virus (HIV)/sexually transmitted diseases (STDs) related knowledge, the prevalence and risk factors for HIV/STDs among tin miners in Gejiu, Yunnan Province.
Methods: A cross-sectional study was conducted in tin miners working at 5 mining regions from March to June 2006 in Gejiu City, Yunnan Province. A total of 1796 miners were enrolled in the study, and a standardized questionnaire was administered probing socio-demographic factors, knowledge of HIV/STDs and sexual behavior. 7 ml-volume venous blood and 15 ml urine specimens were collected for HIV/STDs testing.
Results: Twelve participants [0.7%] (12/1760) were identified HIV positive. While, the positive proportions for syphilis, herpes simplex virus type-2 (HSV-2), Neisseria gonorrhea and Chlamydia trachoma were 1.8% (31/1760), 9.6% (169/1760), 0.8% (14/1773), 4.8% (85/1773), respectively. The total prevalence of STDs was 14.9% (264/1776). Factors associated with HIV infection were illegal drug use (adjusted OR = 17.8; 95% CI: 4.0 - 78.8), frequencies of visiting female sex workers in the past twelve months (adjusted OR = 8.7; 95% CI: 1.9 - 39.0), tattoos (adjusted OR = 6.6; 95% CI: 1.8 - 24.0), surgical operation experiences (adjusted OR = 6.0; 95% CI: 1.6 - 22.5) and toothbrush sharing (adjusted OR = 5.6; 95% CI: 1.0 - 31.3). Factors associated with STDs infection were race (adjusted OR = 2.0; 95% CI: 1.5 - 2.7), age (adjusted OR = 1.7; 95% CI: 1.0 - 2.9), illegal drug use (adjusted OR = 2.3; 95% CI: 1.0 - 5.2), living with spouses (adjusted OR = 1.4; 95% CI: 1.1 - 1.9) and visiting female sex workers (adjusted OR = 1.9; 95% CI: 1.4 - 2.6). Only 4.1% (49/1201) of respondents aware the correct transmission routes of HIV. 21.6% (339/1569) of the miners who had previous sexual experience self-reported visiting female sex workers.
Conclusion: HIV and other STDs are highly prevalent amongst miners in this region. In addition, the awareness of HIV/STDs is low and multiple routes of HIV transmission, such as heterosexual intercourse and IDU, were also observed in these study subject. HIV/STDs interventions should therefore be reinforced among the miners in this region.
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