Pathotyping and genetic characterization of avian avulavirus-1 from domestic and wild waterfowl, geese and black swans in Pakistan, 2014 to 2017

Pathotyping and genetic characterization of avian avulavirus-1 from domestic and wild waterfowl,... Twenty-nine avian avulavirus-1 viruses (AAvV-1s) from healthy domestic and wild ducks, geese and black swans collected in Pakistan between 2014-2017 have been pathotyped and genetically characterized. A phylogenetic analysis revealed that 21 of the isolates belonged to sub-genotype VIIi, whereas eight isolates were highly similar to vaccine-like viruses of geno- type II. In addition to confirming the continued presence of sub-genotype VIIi AAvV-1s in Pakistan, this study identifies the probable spill-over of vaccine-like viruses from vaccinated poultry to wild and domestic waterfowl and, as such, has important implications for the control and management of Newcastle disease in Pakistan. Newcastle disease (ND) caused by virulent strains of avian Two classes of AAvV-1s (I and II) together with several avulavirus-1 (AAvV-1) (previously referred to as Newcas- genotypes and sub-genotypes exist [1]. Several classifica - tle disease virus or avian paramyxovirus-1) continues to be tion systems have been proposed based on the phylogenetic a persistent problem for poultry producers in developing analysis of partial or complete nucleotide sequences of the countries, including Pakistan, where biosecurity levels are Fusion (F) gene [1, 8]. The most recent system is based low. ND is endemic in Pakistan but the epidemiology of the on the analysis http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Pathotyping and genetic characterization of avian avulavirus-1 from domestic and wild waterfowl, geese and black swans in Pakistan, 2014 to 2017

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Publisher
Springer Vienna
Copyright
Copyright © 2018 by Springer-Verlag GmbH Austria, part of Springer Nature
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-018-3902-y
Publisher site
See Article on Publisher Site

Abstract

Twenty-nine avian avulavirus-1 viruses (AAvV-1s) from healthy domestic and wild ducks, geese and black swans collected in Pakistan between 2014-2017 have been pathotyped and genetically characterized. A phylogenetic analysis revealed that 21 of the isolates belonged to sub-genotype VIIi, whereas eight isolates were highly similar to vaccine-like viruses of geno- type II. In addition to confirming the continued presence of sub-genotype VIIi AAvV-1s in Pakistan, this study identifies the probable spill-over of vaccine-like viruses from vaccinated poultry to wild and domestic waterfowl and, as such, has important implications for the control and management of Newcastle disease in Pakistan. Newcastle disease (ND) caused by virulent strains of avian Two classes of AAvV-1s (I and II) together with several avulavirus-1 (AAvV-1) (previously referred to as Newcas- genotypes and sub-genotypes exist [1]. Several classifica - tle disease virus or avian paramyxovirus-1) continues to be tion systems have been proposed based on the phylogenetic a persistent problem for poultry producers in developing analysis of partial or complete nucleotide sequences of the countries, including Pakistan, where biosecurity levels are Fusion (F) gene [1, 8]. The most recent system is based low. ND is endemic in Pakistan but the epidemiology of the on the analysis

Journal

Archives of VirologySpringer Journals

Published: Jun 2, 2018

References

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