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加拿大研究人员近日指出,尽管针具交换计划在减少温哥华的针具共用行为方面取得了显著的成功,但目前需要采取新的措施来进一步降低感染HIV和吸毒过量的危险。研究人员搜集了温哥华776名注射吸毒者的资料,结果发现,尽管成功地实施了针具交换计划,但仍有 27.6％的患者继续共用针具。此外,还存在其它一些重要的危险行为,如针具的重复使用、当众吸毒、单独注射（吸毒过量的一个重要危险因素）,和难以获得消毒针具等。他们由此认为,应当通过建立“安全
Canadian researchers recently pointed out that although the needle exchange program has achieved remarkable success in reducing needle sharing in Vancouver, new measures are needed to further reduce the risk of HIV infection and overdose. The researchers collected data from 776 injecting drug users in Vancouver and found that despite successful needle exchange programs, 27.6% of patients continue to share needles. In addition, there are other important dangerous behaviors, such as the repeated use of needles, injecting drugs in public, separate injections (an important risk factor for overdose), and difficulties in obtaining needles for disinfection. They believe that this should be achieved through the establishment of "security