Identification of new CRF51-01B in Singapore using full genome analysis of three HIV type 1 isolates

A recent HIV-1 molecular epidemiology survey in Singapore identified a novel CRF01-AE/B recombinant form, which accounted for 13 (11.9%) of 109 patient samples. Peripheral blood mononuclear cell DNA from three of these 13 patients was used to generate near full-length sequences to characterize the novel CRF01-AE/B recombinant form. The three isolates had a recombinant structure composed of CRF01-AE and subtype B, and shared identical breakpoints. As the three patients were not epidemiologically linked, this recombinant form has been designated CRF51-01B. Identification of the novel recombinant forms indicates ongoing active HIV-1 transmission in Singapore. © Copyright 2012, Mary Ann Liebert, Inc. 2012.