Journal
INTERNATIONAL JOURNAL OF STD & AIDS
Volume 14, Issue 8, Pages 547-551Publisher
ROYAL SOC MEDICINE PRESS LTD
DOI: 10.1258/095646203767869165
Keywords
CD4 antigens; immunologic monitoring; HIV infections; Africa
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The relationship between CD4 percent and CD4 count has been reported to be different in industrialized countries compared to sub-Saharan Africa, where often only the former is reliable. CD4 determinations from an open cohort of hotel workers in Dar es Salaam followed between 1990 and 1998 were evaluated. T-lymphocyte determinations were offered once a year to 190 HIV-1 seropositive, 80 seroconverters and 495 sex and age matched HIV-seronegative subjects. After log transformation of the CD4 percent and CD4 counts a good fit to a linear regression curve was found, R-2 0.697. The CD4 percent corresponding to a CD4 count of 200 cells/mm(3) was found to be 9.8%. CD4 percent determination can be useful to estimate CD4 counts, but needs to be locally standardized. The CD4 percent in Africa corresponding to AIDS defining CD4 counts seems to be lower than in the industrialized world.
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