The National Institute of Mental Health (NIMH) AIDS Program is the fourth largest acquired immune deficiency syndrome (AIDS) program within the National Institutes of Health (NIH). Since 1983, our program's contributions have concentrated on two major areas. The first has been to develop effective strategies to prevent or reduce behaviors that place individuals at risk for human immunodeficiency virus type 1 (HIV-1) infection. The second has been to support and foster research to enhance our understanding of the profound impact of H IV-1 infection on the central nervous system (eNS). The...