SciELO - Scientific Electronic Library Online

vol.84 número1Intestinal dermoid cyst in a German shepherd dogSerological survey of bovine viral diarrhoea virus in Namibian and South African kudu (Tragelaphus strepsiceros) and eland (Taurotragus oryx) índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados



Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Em processo de indexaçãoSimilares em Google


Journal of the South African Veterinary Association

versão On-line ISSN 2224-9435
versão impressa ISSN 1019-9128


KASANGA, Christopher J. et al. Molecular epidemiology of infectious bursal disease virus in Zambia. J. S. Afr. Vet. Assoc. [online]. 2013, vol.84, n.1, pp.1-4. ISSN 2224-9435.

Nucleotide sequences of the VP2 hypervariable region (VP2-HVR) of 10 infectious bursal disease viruses detected in indigenous and exotic chickens in Zambia from 2004 to 2005 were determined. Phylogenetic analysis showed that the viruses diverged into two genotypes and belonged to the African very virulent types (VV1 and VV2). In the phylogenetic tree, strains in one genotype clustered in a distinct group and were closely related to some strains isolated in western Africa (VV1), with nucleotide similarities of 95.7% - 96.5%. Strains in the other genotype were clustered within the eastern African VV type (VV2), with nucleotide similarities of 97.3% - 98.5%. Both genotypes were distributed in the southern parts of Zambia and had a unique conserved amino acid substitution at 300 (E→A) in addition to the putative virulence marker at positions 222(A), 242(1), 256(1), 294(1) and 299(S). These findings represent the first documentation of the existence of the African VV-IBDV variants in both indigenous and exotic chickens in Zambia.

        · texto em Inglês     · Inglês ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons