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. 2010 Aug;100(8):1449-53.
doi: 10.2105/AJPH.2009.178467. Epub 2010 Jun 17.

Syringe sharing and HIV incidence among injection drug users and increased access to sterile syringes

Thomas Kerr  1 , Will Small, Chris Buchner, Ruth Zhang, Kathy Li, Julio Montaner, Evan Wood
Affiliations

Syringe sharing and HIV incidence among injection drug users and increased access to sterile syringes

Thomas Kerr et al. Am J Public Health. 2010 Aug.

Abstract

Objectives: We assessed the effects of syringe exchange program (SEP) policy on rates of HIV risk behavior and HIV incidence among injection drug users.

Methods: Using a multivariate generalized estimating equation and Cox regression methods, we examined syringe borrowing, syringe lending, and HIV incidence among a prospective cohort of 1228 injection drug users in Vancouver, British Columbia.

Results: We observed substantial declines in rates of syringe borrowing (from 20.1% in 1998 to 9.2% in 2003) and syringe lending (from 19.1% in 1998 to 6.8% in 2003) following SEP policy change. These declines coincided with a statistically significant increase in the proportion of participants accessing sterile syringes from nontraditional SEP sources (P < .001). In multivariate analyses, the period following the change in SEP policy was independently associated with a greater than 40% reduction in syringe borrowing (adjusted odds ratio [AOR] = 0.57; 95% confidence interval [CI] = 0.49, 0.65) and lending (AOR = 0.52; 95% CI = 0.45, 0.60), as well as declining HIV incidence (adjusted hazard ratio = 0.13; 95% CI = 0.06, 0.31).

Conclusions: Widespread syringe distribution appears to be a more effective SEP policy than do more restrictive SEP policies that limit syringe access. Efforts should be made to ensure that SEP policies and program design serve to maximize rather than hinder syringe access.

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Figures

FIGURE 1
FIGURE 1
Proportion of VIDUS participants reporting (a) syringe borrowing and (b) syringe lending: Vancouver, British Columbia, 1998–2003. Note. VIDUS = Vancouver Injection Drug Users Study. aYears of policy change.
FIGURE 2
FIGURE 2
Proportion of VIDUS participants reporting access to various syringe distribution sources: Vancouver, British Columbia, 1998–2003. Note. SEP = syringe exchange program; VIDUS = Vancouver Injection Drug Users Study. “Other SEPs” refers to street nurses, hotel-based SEPs, health clinics, and the “Health Van”; drug user–led SEPs were implemented for the first time in 2001.
See this image and copyright information in PMC

Comment in

  • Should we move from syringe exchange to distribution?
    Drach L, Guernsey J, Maher JE, Rumptz M, Stark M, Pranian K, Casciato C. Drach L, et al. Am J Public Health. 2011 Mar;101(3):389-90; author reply 390. doi: 10.2105/AJPH.2010.300048. Am J Public Health. 2011. PMID: 21307370 Free PMC article. No abstract available.

References

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    1. Wood E, Tyndall MW, Spittal PM, et al. Factors associated with persistent high-risk syringe sharing in the presence of an established needle exchange programme. AIDS 2002;16(6):941–943 - PubMed

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