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Isolation and characterization of a new goose orthoreovirus causing liver and spleen focal necrosis in geese, China

文献类型： 外文期刊

作者： Huang, Yunzhen 1 ; Zhang, Junqin 1 ; Dong, Jiawen 1 ; Li, Linlin 1 ; Kuang, Ruihuan 1 ; Sun, Minhua 1 ; Liao, Ming 2 ;

作者机构： 1.Guangdong Acad Agr Sci, Inst Anim Hlth, Key Lab Livestock Dis Prevent & Treatment Guangdo, Sci Observat & Expt Stn Vet Drugs & Diagnost Tech, Guangzhou, Peoples R China

2.Guangdong Acad Agr Sci, Guangzhou 510640, Peoples R China

关键词： complete genome; focal necrosis; goose; orthoreovirus

期刊名称：TRANSBOUNDARY AND EMERGING DISEASES （ 影响因子：5.005； 五年影响因子：4.622 ）

ISSN： 1865-1674

年卷期：

页码：

收录情况： SCI

摘要： Since July 2020, an infectious disease characterized by liver and spleen white focal necrosis has been spreading widely through geese farms in many regions of China. A novel goose orthoreovirus (GRV), designated GRV-GD2020, was isolated from the liver and spleen of dead geese. Phylogenetic analysis and sequence comparison revealed that all the genes of GRV-GD2020 clustered with other waterfowl-origin orthoreovirus. However, the gene constellation of GRV-GD2020 was not similar to that of any particular strain. Instead, the genomic segments of GRV-GD2020 showed 27.5-97.3% similarities to that of other waterfowl-origin orthoreovirus isolates. Waterfowl-origin orthoreovirus infections characterized by liver and spleen focal necrosis had not emerged in recent years. The re-emergence of the disease may be related to the recombination of the genome segments of Muscovy duck reovirus (MDRV), GRV, and new-type duck orthoreovirus. In summary, we determined that the GRV-GD2020 strain, causing goose liver and spleen focal necrosis, is a new variant of waterfowl-origin orthoreovirus.

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