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Couto-Fernandez, J.C. et al.

Couto-Fernandez, Eyer-Silva, Guimarães, Chequer-Fernandez, Grinsztejn, Delaporte, Peeters, Morgado,

Phylogenetic analysis of Brazilian HIV type 1 subtype D strains: tracing the origin of this subtype in Brazil.

HIV-1 Subtype D occurs mainly in East and Central African countries, especially Uganda, where the prevalence of HIV-1 infection is among the highest in the world. We present the phylogenetic analysis of one nonautochthonous and four autochthonous (including a near full-length genome) Brazilian HIV-1 subtype D strains identified in Rio de Janeiro State, where subtypes B, F1, and BF1 recombinants predominate. Phylogenetic inferences using maximum likelihood were applied on a near-full length genome and on concatenated gag, protease, reverse transcriptase, integrase, C2V3/env, gp41, and nef segments. Sequences from an Angolan immigrant showed close genetic similarity with a strain described in Finland, from an HIV patient of African origin, whereas all four autochthonous Brazilian sequences clustered with South African strains, where subtype D occurs only in isolated cases. Our results suggest the successful introduction and circulation in Brazil of closely related HIV-1 subtype D strains, possibly of South African origin.[1]

References

Phylogenetic analysis of Brazilian HIV type 1 subtype D strains: tracing the origin of this subtype in Brazil. Couto-Fernandez, J.C., Eyer-Silva, W.A., Guimarães, M.L., Chequer-Fernandez, S.L., Grinsztejn, B., Delaporte, E., Peeters, M., Morgado, M.G. AIDS Res. Hum. Retroviruses (2006) [Pubmed]

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