Journal of Integrative Agriculture ›› 2020, Vol. 19 ›› Issue (9): 2294-2300.DOI: 10.1016/S2095-3119(20)63301-9

所属专题: 动物医学合辑Veterninary Medicine

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  • 收稿日期:2020-07-05 出版日期:2020-09-01 发布日期:2020-08-04

Protective efficacy of an H5/H7 trivalent inactivated vaccine produced from Re-11, Re-12, and H7-Re2 strains against challenge with different H5 and H7 viruses in chickens

ZENG Xian-ying1*, CHEN Xiao-han1*, MA Shu-jie1, WU Jiao-jiao1, BAO Hong-mei1, PAN Shu-xin1, LIU Yan-jing1, DENG Guo-hua1, SHI Jian-zhong1, CHEN Pu-cheng1, JIANG Yong-ping1, LI Yan-bing1, HU Jing-lei2, LU Tong2, MAO Sheng-gang2, GUO Xing-fu2, LIU Jing-li2, TIAN Guo-bin1, CHEN Hua-lan1   
  

  1. 1 State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R.China
    2 Harbin Weike Biotechnology Development Company, Harbin 150069, P.R.China 
  • Received:2020-07-05 Online:2020-09-01 Published:2020-08-04
  • Contact: Correspondence CHEN Hua-lan, Tel: +86-451-51997168, Fax: +86-451-51997166, E-mail: chenhualan@caas.cn; TIAN Guo-bin, Tel: +86-451-51051681, Fax: +86-451-51997166, E-mail: tianguobin@caas.cn
  • About author:ZENG Xian-ying, E-mail: zengxianying@caas.cn; * These authors contributed equally to this study.
  • Supported by:
    This work was supported by the National Key R&D Program of China (2016YFD0501602, 2017YFD0500701, and 2016YFE0203200), the National Natural Science Foundation of China (3167131307), the China Agriculture Research System (CARS-41-G12), and Central Public-interest Scientific Institution Basal Research Fund (1610302017001).

Abstract:

We developed an H5/H7 trivalent inactivated vaccine by using Re-11, Re-12, and H7-Re2 vaccine seed viruses, which were generated by reverse genetics and derived their HA genes from A/duck/Guizhou/S4184/2017(H5N6) (DK/GZ/S4184/17) (a clade 2.3.4.4d virus), A/chicken/Liaoning/SD007/2017(H5N1) (CK/LN/SD007/17) (a clade 2.3.2.1d virus), and A/chicken/Guangxi/SD098/2017(H7N9) (CK/GX/SD098/17), respectively.  The protective efficacy of this novel vaccine and that of the recently used H5/H7 bivalent inactivated vaccine against different H5 and H7N9 viruses was evaluated in chickens.  We found that the H5/H7 bivalent vaccine provided solid protection against the H7N9 virus CK/GX/SD098/17, but only 50–60% protection against different H5 viruses.  In contrast, the novel H5/H7 trivalent vaccine provided complete protection against the H5 and H7 viruses tested.  Our study underscores the importance of timely updating of vaccines for avian influenza control.

Key words: avian influenza ,  H5/H7 trivalent vaccine ,  Re-11 ,  Re-12 and H7-Re2 strains ,  protective efficacy