The subject matter of this volume, the basis for which was a conference held in Philadelphia which focused on the subject of infections, including their diagnosis and treatment, in immunocompromised individuals. The material is of particular importance today when placed against the background of the rapid spread of acquired immunodeficiency syndrome (AIDS). The first section dealt with the general subject of the immunocompromised host. Here, reviewed in detail, were the epidemiological and clinical aspects of opportunistic infections in patients with defective immune responses. It is widely...