ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (10): 1998-2004.doi: 10.11843/j.issn.0366-6964.2017.10.024

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Isolation and Identification of Getah Virus from Culicoides in Xinjiang

LIU Shuai1,2, Jiapaer HASIMU3, XUE Xin-mei4, DING Meng-yue1,2, MA Xiao-jing1, YE Feng1, MA Jun-jie1, YI Xin-ping1, GU Wen-xi1*, ZHONG Qi1*   

  1. 1. Institute of Veterinary Medicine, Xinjiang Academy of Animal Science, Urumqi 830000, China;
    2. College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China;
    3. Yuli Animal Husbandry and Veterinary Station, Yuli 841500, China;
    4. Animal Eppidemic Control and Diagnosis Center, Bayingol Mongolian Autonomous Prefecture, Korla 841000, China
  • Received:2017-05-02 Online:2017-10-23 Published:2017-10-23
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Abstract:

In order to learn the situation of parasitic virus in Culicoides in Yuli County, Xinjiang, a total of 18 000 Culicoides were collected from Yuli County and divided into 360 groups, with 50 Culicoides in each group. Then the Culicoides were ground and inoculated into BHK-21, C6/36 and Vero cells, respectively. After 5 generations of blind passage, one group of Culicoides made CPE arise in BHK-21. Then the isolated strain was firstly identified to be RNA viruses by drug sensitivity test (5-floxuridine). Secondly, the amplified primers were identified by arthropod-borne RNA viruses and the result showed that the strain belongs to alphaviruses and is suspected to be Getah viruses. Finally, the isolated strain was determined to be Getah viruses by neutralization test, immunoelectron microscopic observation, PCR amplification of Getah virus C gene-specific primer and other methods. In this study, Getah viruses were isolated from Xinjiang Culicoides for the first time and the virus strain presents a closest genetic relationship (98%) with the 2005 Japanese isolated strain, for which the reason might be the introduction of Japanese breeding sires with the disease or their seminal fluid, suggesting that in the import and export trade activities of animal husbandry, quarantine inspection on Getah virus should be strengthened.

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