1
Cias Zembe1, Eitel Mpoudi-Ngole2, Carolyn Williamson1,4 and Wendy A Burgers1*AbstractBackground: Cameroon, in west central Africa, has an extraordinary degree of HIV diversity, presenting a major challenge for the development of an effective HIV vaccine. Given the continuing need to closely monitor the emergence of new HIV variants in the country, we analyzed HIV-1 genetic diversity in 59 plasma s
1
Ologyj.com/content/10/1/Page 2 ofparticularly relevant because they encode highly immunogenic proteins that are frequently included in candidate vaccines [9-11]. We sequenced 50 full length HIV-1 gag and 55 nef genes from 59 HIV-infected blood donors in Cameroon. To obtain a phylogenetic view of Cameroonian HIV diversity that explicitly accounted for the confounding effects of recombination, we pe
1
Nowledgements The authors are grateful to Andile Nofemela and Roman Ntale for technical assistance with viral sequencing. This research was supported by the International Atomic Energy Agency (technical co-operation project RAF/6/ 029), Poliomyelitis Research Foundation (PRF) of South Africa and the University of Cape Town, for collaborative projects with partners in the global South. We thank Ger
1
Kh R, Awazi B, Hewlett I: Increased genetic diversity and intersubtype recombinants of HIV-1 in blood donors from urban Cameroon. J Acquir Immune Defic Syndr 2007, 45:361?63. 6. Ndembi N, Abraha A, Pilch H, Ichimura H, Mbanya D, Kaptue L, Salata R, Arts EJ: Molecular characterization of human immunodeficiency virus type 1 (HIV-1) and HIV-2 in Yaounde, Cameroon: evidence of major drug resistance mu
1
Onfim I, Camacho RJ, Vandamme AM, Lemey P: Phylodynamics of the HIV-1 CRF02_AG clade in Cameroon. Infect Genet Evol 2012, 12:453?60. 20. Zhang M, Foley B, Schultz AK, Macke JP, Bulla I, Stanke M, Morgenstern B, Korber B, Leitner T: The role of recombination in the emergence of a complex and dynamic HIV epidemic. Retrovirology 2010, 7:25. 21. Carr JK, Salminen MO, Albert J, Sanders-Buell E, Gotte D
1
Ck squares at the end of the branches represent the nef sequences sampled from Cameroon in this study, while red squares represent intragene recombinant fragments in our samples. Abbreviations HIV: Human Immunodeficiency Virus; CRF: Circulating recombinant form; URF: Unique recombinant form; RNA: Ribonucleic acid; PCR: Polymerase Chain Reaction. Competing interests The authors declare that they ha
1
Nowledgements The authors are grateful to Andile Nofemela and Roman Ntale for technical assistance with viral sequencing. This research was supported by the International Atomic Energy Agency (technical co-operation project RAF/6/ 029), Poliomyelitis Research Foundation (PRF) of South Africa and the University of Cape Town, for collaborative projects with partners in the global South. We thank Ger
1
Les 1, 2). The sequences clustered with different clades and circulating recombinant forms distributed throughout the phylogenetic trees (Table 2), consistent with the breadth of HIV-1 diversity previously described in Cameroon. CRF02_AG-like viruses dominated the clade distribution, infecting 50 of the 46 participants for which both genes were sequenced (Figure 2). Participants infected with vir