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Article
February 1995

Trends in AIDS Diagnosis and Reporting Under the Expanded Surveillance Definition for Adolescents and Adults—United States, 1993

Arch Dermatol. 1995;131(2):137-138. doi:10.1001/archderm.1995.01690140017002
Abstract

THE EXPANSION of the surveillance case definition for acquired immunodeficiency syndrome (AIDS) in January 19931 resulted in a large increase in reported AIDS cases. This increase has primarily reflected reports of human immunodeficiency virus (HIV)-infected persons in whom severe immunosuppression (CD4+ count less than 200 T-lymphocytes/μL or a CD4+ T-lymphocyte percentage of total lymphocytes of less than 14) had been diagnosed, which typically occurs before the onset of AIDS-defining opportunistic illnesses (AIDS-OIs, CDC clinical category C disease).1,2 The inclusion of the CD4+ reporting criteria in AIDS surveillance has required an alteration in methods used to assess trends in AIDS incidence, previously based on the diagnosis of AIDS-OIs. This report first summarizes information about AIDS cases reported during 1993; then, to describe trends in AIDS incidence if the surveillance definition had not been expanded, this report uses estimates of eventual AIDS-OI diagnosis dates for persons who were reported with

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