Two terms that have become common in the contemporary literature of internal medicine, surgery, and pediatrics are the immunocompromised host and opportunistic infection. The first of these terms, immunocompromised host (or such variants as the compromised host), describes a group of individuals with impairment of either or both natural and specific immunity to infection (impaired host defenses) such that they are at increased risk for infection by a variety of microorganisms. The microorganisms that invade these individuals may be grouped into three major categories:
KeywordsHuman Immunodeficiency Virus Immunocompromised Host Empiric Antimicrobial Therapy Impaired Host Defense Bubonic Plague
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