Low CD4 + T-Lymphocyte Values in Human Immunodeficiency Virus-Negative Adults in Botswana

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Abstract
CD4 + -lymphocyte counts (LCs) play a crucial role in the management and monitoring of HIV infection. Variability in CD4 + LCs has been reported to occur as a result of measurement techniques and/or biological variations. We report on the CD4 + LCs of healthy human immunodeficiency virus (HIV)-seronegative adults in Botswana. Samples were obtained from HIV-seronegative blood donors. The median CD4 + LC was 726 cells/mm 3 (for females, 782 cells/mm 3 ; for males, 698 cells/mm 3 ). The median CD8 + LC was 488 cells/mm 3 (for females, 494 cells/mm 3 ; for males, 485 cells/mm 3 ). The median CD4 + -to-CD8 + ratio was 1.57 (for females, 1.66; for males, 1.51). Our findings of low CD4 + LCs among HIV-negative adults in Botswana are significant and have important implications for the management of HIV disease in the population of this sub-Saharan African country.

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