Important note: Information in this article was accurate in December 1992. The state of the art may have changed since the publication date.MMWR Weekly - December 25, 1992 / 41(51);961-962
Centers for Disease Control and Prevention
On December 18, 1992, CDC published a revised classification system for human immunodeficiency virus (HIV) infection and an expanded surveillance case definition for acquired immunodeficiency syndrome (AIDS) among adolescents and adults in the United States (1). * Based on the clinical standard for immunologic monitoring of persons infected with HIV, the revised HIV classification system includes the CD4+ T-lymphocyte measurement in the categorization of HIV-related clinical conditions and replaces the HIV classification system published in 1986 (2). In addition, the expanded AIDS surveillance case definition includes all HIV-infected persons who have less than 200 CD4+ T-lymphocytes/uL or a CD4+ T-lymphocyte percent of total lymphocytes less than 14, or who have been diagnosed with pulmonary tuberculosis, invasive cervical cancer, or recurrent pneumonia. The new AIDS surveillance case definition retains the reporting criteria listed in the 1987 AIDS surveillance case definition (3). The objectives of the expansion are to reflect more accurately the number of persons with severe HIV-related morbidity and immunosuppression and to simplify the reporting process. Beginning January 1, 1993, this expanded AIDS surveillance case definition is to be used by all states and territories for AIDS case reporting.
Single copies of the document will be available in mid-January from the CDC National AIDS Clearinghouse, P.O. Box 6003, Rockville, MD 20849-6003; telephone (800) 458-5231.
CDC. 1993 Revised classification system for HIV infection and expanded surveillance case definition for AIDS among adolescents and adults. MMWR Dec 18, 1992 / 41(RR-17).
CDC. Classification system for human T-lymphotropic virus type III/lymphadenopathy-associated virus infections. MMWR May 23, 1986 / 35(20);334-9
CDC. Revision of the CDC surveillance case definition for acquired immunodeficiency syndrome. MMWR 1987;36(no. S-1).
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