Molecular characterization of infectious bursal disease virus (IBDV): Diversity of very virulent IBDV in Tanzania

Molecular characterization of infectious bursal disease virus (IBDV): Diversity of very virulent... Nucleotide sequences of the VP2 hypervariable region (VP2-HVR) of 14 infectious bursal disease viruses (IBDVs) isolated in Tanzania from 2001 to 2004 were determined. Phylogenetic analysis showed that the isolates diverged into two genotypes and belonged to the very virulent (VV) type. In the phylogenetic tree, strains in one genotype clustered in a distinct group and were closely related to some strains isolated in western Africa, with nucleotide similarities of 96.1–96.8%, while strains in another genotype were clustered within the European/Asian VV type with nucleotide similarities ranging from 97.5 to 99.3%. Both genotypes were widely distributed throughout Tanzania, and had conserved putative virulence marker amino acids (aa) at positions 222(A), 242(I), 256(I), 294(I) and 299(S). Our findings demonstrate for the first time the existence of both African and European/Asian VV-IBDV variants in Tanzania. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Molecular characterization of infectious bursal disease virus (IBDV): Diversity of very virulent IBDV in Tanzania

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Publisher
Springer-Verlag
Copyright
Copyright © 2007 by Springer-Verlag
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-006-0898-5
Publisher site
See Article on Publisher Site

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