Brief Report: Identification of Elite and Viremic Controllers From a Large Urban HIV Ambulatory Center in Kampala, Uganda

Background: Throughout the world, there are antiretroviral therapy–naive HIV+ individuals who maintain elevated peripheral CD4+ T-cell counts, historically referred to as long-term nonprogressors (LTNPs). With recent improvements in viral load (VL) detection methods to levels as low as 20 copies per milliliter, 2 subsets of LTNPs have been defined: elite controllers (ECs), with undetectable VLs for at least 6–12 months, and viremic controllers (VCs), with VLs between 200 and 2000 copies per milliliter. ECs and VCs have been extensively studied in the developed world to determine underlying mechanisms responsible for virologic control. In sub-Saharan Africa, most studies have characterized LTNPs based on immunologic criteria making it difficult to compare findings with the Western coh...

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