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Updated: Aug 11, 2026

Genotypic Inference of HIV-1 Tropism Using Population-based Sequencing of V3
Published on: December 28, 2010
HIV-2 subtype circulating in India (south)
Rajesh Kannangai1, Ramachandran V Shaji, Sandeep Ramalingam
1Department of Clinical Virology, Christian Medical College Hospital, Vellore-632 004, India.
Abstract:
The genetic types and subtypes of HIV vary from region to region. This study looked at the relative prevalence of HIV-2 subtypes in south India. Nucleotide sequencing of the HIV-2 envelope V3 region of strains from 11 individuals infected with HIV-2 and one individual who had dual infection with HIV-1 and HIV-2 was performed. Phylogenetic analysis showed that all individuals were infected with HIV-2 subtype A. These strains were from individuals who live in different regions of south India. In all, up to present, 17 strains inclusive of the authors' 12 have been sequenced, and subtype A of HIV-2 is seen in both monoinfections and dual infections with HIV-1 in India.
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