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The extent of HIV-1 diversity was examined among patients attending a rural district hospital in a coastal area of Kenya. The pol gene was sequenced in samples from 153 patients. Subtypes were designated using the REGA, SCUEAL, and jpHMM programs. The most common subtype was A1, followed by C and D; A2 and G were also detected. However, a large proportion of the samples was found to be recombinants, which clustered within the pure subtype branches. Phylogeographic analysis of Kilifi sequences compared with those from other regions of Africa showed that while many sequences were closely related to sequences from Kenya, others were most closely related to known sequences from other parts of Africa, including West Africa. Overall, these data indicate that there have been multiple introductions of HIV-1 into this small rural town and surroundings with ongoing diversity being generated by recombination.

Original publication

DOI

10.1089/aid.2011.0048

Type

Journal article

Journal

AIDS Res Hum Retroviruses

Publication Date

02/2012

Volume

28

Pages

220 - 224

Keywords

Adult, Cluster Analysis, Female, Genes, pol, Genetic Variation, HIV Seropositivity, HIV-1, Humans, Kenya, Male, Middle Aged, Molecular Sequence Data, Phylogeny, Recombination, Genetic