Inactivated H9N2 vaccines developed with early strains do not protect against recent H9N2 viruses:Call for a change in H9N2 control policy  

作　　者：Yanjing Liu Qingqing Yu Xiangyu Zhou Wenxin Li Xinwen He Yan Wang Guohua Deng Jianzhong Shi Guobin Tian Xianying Zeng Hualan Chen 

机构地区：[1]College of Veterinary Medicine,Gansu Agricultural University,Lanzhou 730070,China [2]State Key Laboratory for Animal Disease Control and Prevention,Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases,Ministry of Agriculture and Rural Affairs/Harbin Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Harbin 150009,China [3]National Poultry Laboratory Animal Resource Center,Harbin Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Harbin 150009,China [4]Harbin Weike Biotechnology Co.,Ltd.,Harbin 150009,China

出　　处：《Journal of Integrative Agriculture》2024年第6期2144-2148,共5页农业科学学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(2021YFD1800200 and 2021YFC2301700);the National Natural Science Foundation of China(32192451);the Innovation Program of the Chinese Academy of Agricultural Sciences(CAASCSLPDCP-202301);the earmarked fund for CARS41(CARS-41).

摘　　要：H9N2 virus has been widely distributed in wild birds and poultry around the world since its first emergence in the United States of America in 1966(Gu et al.2017;Carnaccini and Perez 2020).The virus appeared in chickens in China in the early 1990s,and over the last two decades has gradually become the dominant epidemic subtype(Sun and Liu 2015;Bi et al.2020).Although H9N2 virus infection alone cannot cause severe disease or death in poultry,H9N2 virus-infected birds experience a degree of egg production drop and can be easily infected by other pathogens,thus causing economic losses for poultry industry.

关 键 词：H9N2 POULTRY policy 

分 类 号：S859.797[农业科学—临床兽医学]