New H6 influenza virus reassortment strains isolated from Anser fabalis in Anhui Province, China

文献类型： 外文期刊

第一作者： Ge, Ye

作者： Ge, Ye;Yao, Qiucheng;Ma, Jian;Chen, Si;Deng, Guohua;Chen, Hualan;Ge, Ye;Chai, Hongliang;Hua, Yuping;Fan, Zhiqiang;Wang, Xianfu

作者机构：

关键词： Avian influenza virus;Anser fabalis;H6 subtype

期刊名称：VIROLOGY JOURNAL （ 影响因子：4.099； 五年影响因子：3.719 ）

ISSN： 1743-422X

年卷期： 2017 年 14 卷

页码：

收录情况： SCI

摘要： Background: H6 subtype avian influenza viruses are globally distributed and, in recent years, have been isolated with increasing frequency from both domestic and wild bird species as well as infected humans. Many reports have examined the viruses in the context of poultry or several wild bird species, but there is less information regarding their presence in migratory birds. Methods: Hemagglutination and hemagglutination inhibition tests were used to measure HA activity for different HA subtypes. Whole viral genomes were sequenced and analysed using DNAstar and MEGA 6 to understand their genetic evolution. Pathogenicity was evaluated using a mouse infection model. Results: We isolated 13 strains of H6 virus from faecal samples of migratory waterfowl in Anhui Province of China in 2014. Phylogenetic analysis showed gene reassortment between Eurasian and North American lineages. Five of the identified H6 strains had the ability to infect mice without adaptation. Conclusion: Our findings suggest that regular surveillance of wild birds, especially migratory birds, is important for providing early warning and control of avian influenza outbreaks.

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