Abstract

In little more than a decade, the AIDS epidemic has exerted a profound effect on morbidity and mortality among young adults and children in many parts of the world. One of the more dramatic aspects of AIDS is that it seems to have arisen almost spontaneously as a new epidemic, spreading rapidly within at-risk populations in a way that is unprecedented for the serious infectious diseases of recent memory. Tuberculosis, on the other hand, had only recently been considered a disease of historical importance but of diminishing relevance to current public health priorities, especially in industrialized countries. Over the past decade, however, and in parallel with the AIDS epidemic, there has been a resurgence of tuberculosis in many of the same populations most affected by HIV infection. This has had important implications for clinical practice, public health, and the development of appropriate health policy. A number of elements have converged to promote the development of HIV-related tuberculosis, including biologic, social, and environmental factors. These will be discussed both to provide a context for understanding the relationship between the two epidemics, and as a basis for suggesting strategies for tuberculosis control in the AIDS era.