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Characteristics of very virulent infectious bursal disease viruses isolated from Chinese broiler chickens (2012-2013). | LitMetric

Characteristics of very virulent infectious bursal disease viruses isolated from Chinese broiler chickens (2012-2013).

Acta Trop

Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, People's Republic of China. Electronic address:

Published: January 2015

AI Article Synopsis

Article Abstract

The objective of this study was to characterize the infectious bursal disease viruses (IBDVs) circulating in broiler chicken farms in China between 2012 and 2013. The VP2 gene sequences of nine newly isolated IBDVs, obtained using reverse transcriptase polymerase chain reaction, were determined and compared with worldwide reference isolates, which have been previously well characterized. Phylogenetic analysis revealed that the nine broiler IBDV isolates are closely related to very virulent IBDV (vvIBDV) strains. Analysis of the predicted amino acid sequences of VP2 from the nine vvIBDVs isolated from the broilers revealed that they share 99.2 to 100% sequence similarity. Additionally, amino acids A222, I242, I256, I294 and S299 of VP2 that are conserved among previously characterized vvIBDV strains are also encoded by the nine isolates. This study confirms the circulation of vvIBDVs in Chinese broiler chicken farms experienced slow evolution and was relatively stable in China.

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Source
http://dx.doi.org/10.1016/j.actatropica.2014.10.003DOI Listing

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