We summarize the recommendations for research that emerged from a NIMH-sponsored Conference on HIV, AIDS, and Severe Mental Illness. Recommendations are made in four areas, namely, epidemiology of HIV infection, epidemiology of sexual and drug-use risk behaviors, risk reduction and transmission prevention, and treatment of infected persons. This research is urgently needed to adequately respond to the AIDS epidemic among people with severe mental illness. (C) 1997 Elsevier Science Ltd.