Research Note: A putative novel subtype of the avian hepatitis E virus of genotype 3, Jiangxi province, China
文献类型： 外文期刊
作者： Li, Haiqin 1 ; Zhang, Fanfan 1 ; Tan, Meifang 1 ; Zeng, Yanbing 1 ; Yang, Qun 1 ; Tan, Jia 1 ; Huang, Jiangnan 1 ; Huang, 1 ;
作者机构： 1.Jiangxi Acad Agr Sci, Inst Anim Husb & Vet Med, Nanchang 330200, Jiangxi, Peoples R China
2.Fujian Acad Agr Sci, Inst Anim Husb & Vet Med, Fuzhou 350013, Fujian, Peoples R China
关键词： avian hepatitis E virus; epidemiology investigation; capsid gene; Jiangxi; China
期刊名称：POULTRY SCIENCE （ 影响因子：3.352； 五年影响因子：3.679 ）
ISSN：
年卷期： 2020 年 99 卷 12 期
页码：
收录情况： SCI
摘要： In recent years, the avian hepatitis E virus (HEV) has been widely spread in China, causing huge economic losses. Several studies have carried out detailed epidemiologic investigations of the avian HEV, but no data were from Jiangxi province. Since early April 2020, diseases similar to hepatic rupture hemorrhage syndrome caused by the avian HEV occurred in a Roman Brown layer farm in Jiangxi province, indicating this virus may also be epidemic there. To make this assumption clear, 20 liver samples were collected from the sick flock and then analyzed by detailed viral detection, which confirmed that the avian HEV should be responsible for the aforementioned disease (6 of 20). Then, the capsid gene of the virus was sequenced to show the molecular characteristics of the strain circulating in the aforementioned flock. Sequence comparison showed that it shared 80.7 to 94.7% identities with 12 published strains, while phylogenetic analysis confirmed that it belongs to a new subtype of genotype 3. Moreover, basing on a 242 bp fragment, the novel also shared high similarities to reference strains identified as genotypes before, revealing the genotype 3 maybe very popular in China and even can be divided into several subgroups. In conclusion, a novel avian HEV strain was identified in this study, which belongs to a new subtype of genotype 3. The analysis makes up for the molecular epidemiologic data of avian HEV and provides a basis for further understanding the spread of avian HEV in China.
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