scholarly journals Sequence analysis of VP2 hypervariable region of the field isolates of infectious bursal disease viruses from southern region of India

2018 ◽  
Vol 62 (01) ◽  
pp. 86-97 ◽  
Author(s):  
P. RAJA ◽  
T. M. A. SENTHILKUMAR ◽  
C. V. PRIYADARSHINI ◽  
M. PARTHIBAN ◽  
A. THANGAVELU ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
Hypervariable Region ◽  
Southern Region ◽  
Infectious Bursal Disease ◽  
Field Isolates ◽  
Infectious Bursal Disease Viruses ◽  
Bursal Disease

scholarly journals Sequence analysis of the VP2 gene hypervariable region of infectious bursal disease viruses from India

2001 ◽  
Vol 30 (5) ◽  
pp. 501-507 ◽  
Author(s):  
R. S. Kataria ◽  
A. K. Tiwari ◽  
G. Butchaiah ◽  
J. M. Kataria ◽  
M. A. Skinner
Keyword(s):  
Sequence Analysis ◽  
Hypervariable Region ◽  
Infectious Bursal Disease ◽  
Vp2 Gene ◽  
Infectious Bursal Disease Viruses ◽  
Bursal Disease

scholarly journals Molecular epidemiology of infectious bursal disease virus in Zambia

2013 ◽  
Vol 84 (1) ◽  
Author(s):  
Christopher J. Kasanga ◽  
Tsuyoshi Yamaguchi ◽  
Hetron M. Munang’andu ◽  
Kenji Ohya ◽  
Hideto Fukushi
Keyword(s):  
Phylogenetic Analysis ◽  
Amino Acid ◽  
Infectious Bursal Disease Virus ◽  
Hypervariable Region ◽  
Distinct Group ◽  
The Other ◽  
Infectious Bursal Disease ◽  
Western Africa ◽  
Infectious Bursal Disease Viruses ◽  
Bursal Disease

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(I), 256(I), 294(I) 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.

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