Change in co-receptor usage of current South African HIV-1 subtype C primary isolates

Abstract
Phenotypic analysis was performed on 13 HIV-1 strains isolated between 2000 and 2001. Syncytium-inducing and non-syncytium-inducing subtype C viruses were found, most of which used more than one co-receptor. For the first time subtype B viruses were isolated from South African heterosexual patients, a subtype previously associated only with homosexual spread in this geographical region.Articl