alexa Continuing HIV transmission among injection drug users in Eastern Central Canada: the SurvUDI Study, 1995 to 2000.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Hankins C, Alary M, Parent R, Blanchette C, Claessens C SurvUDI Wor

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Abstract OBJECTIVE: To document HIV prevalence/incidence trends from 1995-2000 and associated risk factors among injection drug users (IDUs) in Eastern Central Canada as an indication of harm reduction strategy effectiveness. METHODS: Nonnominal cross-sectional data (one-time participants) and longitudinal data (repeat participants) were collected using convenience sampling. Participants provided informed consent for face-to-face interviews focused on injection drug use and sexual practices during the previous 6 months; oral fluid samples were taken for HIV testing by enzyme immunoassay. Unique encrypted codes for initially HIV-negative repeat participants permitted incidence rate calculations. RESULTS: In all, 6387 IDUs (median age, 31 years; range, 13-67; males, 73.5\%) participated on 9724 occasions. HIV prevalence ranged from 4.7\% (95\% confidence interval [CI], 2.9-6.5) in semiurban areas to 20.1\% (95\% CI, 17.6-22.7) in Ottawa, Ontario. HIV incidence was 6.0 (95\%CI, 4.5-7.6) per 100 person-years (py) in Montréal, Québec, 3.2 (95\% CI, 2.2-4.2) per 100 py in Québec City and 7.0 (95\% CI, 4.1-9.8) per 100 py in Ottawa/Hull. Reusing other IDUs' needles was reported by 38.4\%. In multivariate logistic regression, IDUs injecting for 6 or more years were more likely to be HIV positive, particularly if cocaine was the predominant drug injected. Multivariate Cox regression revealed higher HIV incidence among those who predominantly injected cocaine, reused others' needles, had injected 6 years or more, injected with strangers, or were men reporting commercial sex work. CONCLUSIONS: These results reveal a volatile situation of continuing HIV transmission among IDUs in Eastern Central Canada.
This article was published in J Acquir Immune Defic Syndr and referenced in Journal of Addiction Research & Therapy

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