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. 2010 Jan;164(1):61-5.
doi: 10.1001/archpediatrics.2009.241.

Survival sex work involvement as a primary risk factor for hepatitis C virus acquisition in drug-using youths in a canadian setting

Kate Shannon  1 , Thomas Kerr, Brandon Marshall, Kathy Li, Ruth Zhang, Steffanie A Strathdee, Mark W Tyndall, Julio G S Montaner, Evan Wood
Affiliations

Survival sex work involvement as a primary risk factor for hepatitis C virus acquisition in drug-using youths in a canadian setting

Kate Shannon et al. Arch Pediatr Adolesc Med. 2010 Jan.

Abstract

Objective: To examine whether there were differential rates of hepatitis C virus (HCV) incidence in injecting drug-using youths who did and did not report involvement in survival sex work.

Design: Data were derived from 2 prospective cohort studies of injecting drug users (May 1, 1996, to July 31, 2007). Analyses were restricted to HCV antibody-negative youths who completed baseline and at least 1 follow-up assessment.

Setting: Vancouver, British Columbia, Canada.

Participants: Of 3074 injecting drug users, 364 (11.8%) were youths (aged 14-24 years) with a median age of 21.3 years and a duration of injecting drug use of 3 years. Main Exposure Survival sex work involvement.

Main outcome measure: The Kaplan-Meier method and Cox proportional hazards regression were used to compare HCV incidence among youths who did and did not report survival sex work.

Results: Baseline HCV prevalence was 51%, with youths involved in survival sex work significantly more likely to be HCV antibody positive (60% vs 44%; P = .002). In baseline HCV antibody-negative youths, the cumulative HCV incidence at 36 months was significantly higher in those involved in survival sex work (68.4% vs 38.8%; P < .001). The HCV incidence density was 36.8 (95% confidence interval [CI], 24.2-53.5) per 100 person-years in youths reporting survival sex work involvement at baseline compared with 14.1 (9.4-20.3) per 100 person-years in youths not reporting survival sex work. In multivariate Cox proportional hazards analyses, survival sex work was the strongest predictor of elevated HCV incidence (adjusted relative hazard, 2.30; 95% CI, 1.27-4.15).

Conclusion: This study calls attention to the critical need for evidence-based social and structural HCV prevention efforts that target youths engaged in survival sex work.

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Figures

Figure 1
Figure 1. Cumulative hepatitis C virus (HCV) incidence in young injecting drug users (14-24 years old) by survival sex work involvement at baseline in Vancouver, British Columbia, Canada, 1996-2007
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