FrontMatter -- Reviewers -- Acknowledgments -- Contents -- Acronyms and Abbreviations -- Summary -- Introduction -- 1 HIV/AIDS in Injecting Drug Users -- 2 Treatment for Drug Dependence -- 3 Sterile Needle and Syringe Access, and Outreach and Education -- 4 Taking Action -- Appendixes -- Appendix A Agenda for Information-Gathering Meeting, Geneva, December 2005 -- Appendix B Literature Search Strategies -- Appendix C Country Case Examples -- Appendix D Tables Summarizing the Evidence on Multi-Component HIV Prevention Programs That Include Needle and Syringe Exchange (NSE) -- Appendix E Additional Thoughts on a Community Randomized Trial of Multi-Component HIV Prevention Programs -- Appendix F Biographies.