The CDC revised its definition of AIDS to include all HIV-infected people who have CD4 T cells count <200 ul or a CD4 T cells percentage <14
In 1993, The U.S. Centers for Disease Control and Prevention (CDC) revised its definition of AIDS to include all HIV-infected people who have CD4 T cells count <200 ul or a CD4 T cells percentage (of total lymphocytes) less than 14.
In addition, the definition includes 26 clinical conditions (opportunistic infections) that affect people with advanced HIV disease.
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Source: U.S. Centers for Disease Control and Prevention
Credit: Photo: Colorized transmission electron micrograph of numerous HIV-1 virus particles (blue) replicating from a segment of a chronically infected H9 T cell (red). Courtesy: National Institute of Allergy and Infectious Diseases, Fort Detrick, Maryland.
