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Surveillance and molecular characterization of Newcastle disease virus in seafowl from coastal areas of China in 2011

文献类型： 外文期刊

作者： Yuan, Xiaoyuan 1 ; Wang, Youling 1 ; Li, Jun 1 ; Yu, Kexiang 1 ; Yang, Jinxing 1 ; Xu, Huaiying 1 ; Zhang, Yuxia 1 ; Ai, 1 ;

作者机构： 1.Shandong Acad Agr Sci, Jinan 250023, Peoples R China

2.Shandong Normal Univ, Coll Life Sci, Jinan 250014, Peoples R China

关键词： NDV;Seafowl;Surveillance;Genetic characterization;F gene

期刊名称：VIRUS GENES （ 影响因子：2.332； 五年影响因子：2.0 ）

ISSN： 0920-8569

年卷期： 2013 年 46 卷 2 期

页码：

收录情况： SCI

摘要： Four Newcastle disease virus (NDV) isolates were obtained from 997 fecal and tissue samples were collected in 2011 from seafowl that included seagull, sea duck, and swan from the coastal areas of Guangdong, Jiangsu, and Shandong in China. These isolates (SD1, SD2, GD1, and JS1) were characterized for their pathogenicity according to their mean death time, intracerebral pathogenicity index and intravenous pathogenicity index. Full-length fusion protein genes containing the cleavage site were sequenced, and amino-acid sequences around the cleavage site were deduced. One isolate (SD2) was virulent to poultry as indicated by its mean death time, intracerebral pathogenicity index, and fusion gene cleavage site sequence, which was specific for virulent NDV (R-112-R-Q-K-R-F-117). The phylogenic analysis indicated that three of the isolates (SD1, GD1, and JS1) belonged to genotype II and the virulent isolate (SD2) belonged to genotype VIId. These findings suggest that some seafowl NDVs in the coastal areas of China have different virulences and molecular characterizations, and these NDVs have some similarity with vaccine- or poultry-adapted isolates.

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