Characterization of an H3N2 canine influenza virus isolated from Tibetan mastiffs in China

文献类型: 外文期刊

第一作者: Teng, Qiaoyang

作者: Teng, Qiaoyang;Xu, Dawei;Zhou, Jiewen;Dai, Xiaoguang;Chen, Zhaoguo;Li, Zejun;Zhang, Xu

作者机构:

关键词: Isolation;Canine influenza virus;Avian-origin;H3N2

期刊名称:VETERINARY MICROBIOLOGY ( 影响因子:3.293; 五年影响因子:3.599 )

ISSN: 0378-1135

年卷期: 2013 年 162 卷 2-4 期

页码:

收录情况: SCI

摘要: Ten 3-month-old Tibetan mastiffs became ill 2 days after they were bought from a Tibetan mastiff exhibition, and 4 of them died 2 weeks later. A canine influenza virus (ZJ0110) was isolated from the lung of a deceased Tibetan mastiff and was characterized in detail. Sequence analysis indicated that the 8 genes of the canine isolate were most similar to those of avian-origin canine influenza viruses (H3N2) isolated in South Korea in 2007, with which they shared >98% sequence identity. ZJ0110 could experimentally infect 6-month-old beagles by intranasal inoculation and by airborne transmission, causing severe respiratory syndrome. Moreover, ZJ0110 could replicate in the upper respiratory tracts of mice and guinea pigs, and the virus titer was comparable to that in the upper respiratory tracts of dogs. Although the virus was genetically of avian origin, ZJ0110 could not experimentally infect chicken or ducks by intranasal inoculation. These results suggest that dogs might be an intermediary host in which avian influenza viruses adapt to replicate in mammals. (C) 2012 Elsevier B.V. All rights reserved.

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