Sequence comparison of the VP2 variable region of infectious bursal disease virus isolates from Vietnam

• Published in: Journal of Veterinary Medical Science Vol. 61; no. 4; pp. 429 - 432
• Main Authors: To, H. (Gifu Univ. (Japan). Faculty of Agriculture), Yamaguchi, T, Nguyen, N.T.P, Nguyen, O.T.K, Nguyen, S.V, Agus, S, Kim, H.J, Fukushi, H, Hirai, K
• Format: Journal Article
• Language: English
• Published: Japan JAPANESE SOCIETY OF VETERINARY SCIENCE 01.04.1999; Japan Science and Technology Agency
• Subjects: Amino Acid Sequence; Animals; Birnaviridae Infections - epidemiology; Birnaviridae Infections - veterinary; Birnaviridae Infections - virology; CHICKENS; Disease Outbreaks; GENE; GENES; IBDV; INFECTIOUS BURSAL DISEASE VIRUS; Infectious bursal disease virus - classification; Molecular Sequence Data; PCR; Phylogeny; POLLO; Polymerase Chain Reaction; POULET; Poultry Diseases - epidemiology; Poultry Diseases - virology; REVERSE TRANSCRIPTION; RT-PCR; TRANSCRIPCION INVERSA; TRANSCRIPTION INVERSE; VIET NAM; VIETNAM; Vietnam - epidemiology; Viral Structural Proteins - chemistry; VIRUS BURSITE INFECTIEUSE; VIRUS BURSITIS INFECCIOSA; VP2 gene; Vietnam
• ISSN: 0916-7250; 1347-7439
• DOI: 10.1292/jvms.61.429

The variable region in the VP2 gene of twenty-three infectious bursal disease virus (IBDV) isolates, collected in Vietnam in 1997 and 1998, was amplified as cDNA by using the reverse transcription-polymerase chain reaction and sequenced. Analysis of amino acid substitutions and phylogenetic relationships of the deduced amino acid sequences (residues 206-350) showed that the nineteen Vietnamese vv IBDVs clustered with the European vv IBDVs, Japanese vv IBDVs and Chinese vv strains, and that the four Vietnamese virulent strains were closely related to European virulent strain 52/70. These results suggest that Vietnamese vv IBDVs, European vv IBDVs, Japanese vv IBDVs and Chinese vv strains have the same origin