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Molecular characterisation of infectious bursal disease viruses isolated in recent acute outbreaks in Solvenia

Zorman Rojs, Olga and Krapež, Uroš and Slavec, Brigita and Mankoč, Sara and Jurišič-Cizerl, Rahela and Barlič-Maganja, Darja (2008) Molecular characterisation of infectious bursal disease viruses isolated in recent acute outbreaks in Solvenia. Acta Veterinaria Hungarica, 56 (2). pp. 255-264. ISSN 0236-6290

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Abstract

In 2004 and then in 2006 several outbreaks of infectious bursal disease (IBD) were reported in broiler and broiler breeder flocks in Slovenia. In this report ten recently emerged IBD viruses (IBDV) were characterised by sequence analysis of the VP2 hypervariable region and compared to previous Slovene IBDV strains from 1995/1996 and to some representative serotype 1 IBDV strains of different pathotypes. On the basis of nucleotide and amino acid identities, phylogenetic analyses and the presence of very virulent IBDV (vvIBDV) conserved amino acid substitutions, all Slovene isolates from recent outbreaks were identified as vvIBDV. Although some unique nucleotide exchanges and amino acid substitutions have been observed, the results of this study indicated that recent vvIBDV isolates are closely related with those from outbreaks in the 1990s. However, acute IBD has not been reported in commercial flocks in Slovenia for some years. This could lead to the conclusion that poor biosecurity and relaxed vaccination could be responsible for the re-emergence of vvIBDV.

Item Type: Article
Subjects: S Agriculture / mezőgazdaság > SV Veterinary science / állatorvostudomány
Depositing User: xKatalin xBarta
Date Deposited: 13 Feb 2017 13:13
Last Modified: 13 Feb 2017 13:13
URI: http://real.mtak.hu/id/eprint/48416

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