Part I: Aids and Drug Use. Sorensen, Introduction: The AIDS-Drug Connection. Wermuth, Case: Implication for AIDS Prevention. Guydish, Golden, Hembry, Needle Sharing, Needle Cleaning, and Risk Behavior Change Among Injection Drug Users. Choi, Wermuth, Unsafe Sex and Behavior Change. Gibson, Catania, Peterson, Theoretical Background. Part II: Preventative Interventions With Drug Abusers and Sexual Partners. Batki, London, Drug Abuse Treatment for HIV Infected Drug Abusers. Sorensen, London, Morales, Group Counseling. Gibson, Lovelle-Drache,Individual Counseling. Wermuth, Robbins, Choi, Eversley, Reaching and and Counseling Women Sexual Partners. Part III: Social Implications. Sorensen, Guydish, Adopting Effective Interventions. Wermuth, Sorensen, Franks, People, Programs, and Policies. Appendix: Where to Get Help or Information.