"In multivariate analyses, we found that police contact was associated independently with residing in the area with no legal possession of syringes; among SEP users, those with access to SEPs without limits had lower syringe re-use but not lower syringe sharing; and that among non-SEP users, no significant differences in injection risk were observed among IDUs with and without pharmacy access to syringes.

"Conclusion: We found that greater legal access to syringes, if accompanied by limits on the number of syringes that can be exchanged, purchased and possessed, may not have the intended impacts on injection-related infectious disease risk among IDUs."

Source

Bluthenthal, Ricky N., Mohammed Rehan Malik, Lauretta E. Grau, Merrill Singer, Patricia Marshall & Robert Heimer for the Diffusion of Benefit through Syringe Exchange Study Team, "Sterile Syringe Access Conditions and Variations in HIV Risk Among Drug Injectors in Three Cities," Addiction Journal, Vol. 99, Issue 9, p. 1136, Sept. 2004.