Dear Editor,China is located in the eastern part of the Eurasian continent,with a large north–south range,resulting in a large temperature difference.Wild birds migrate two times annually along with the north–south ...Dear Editor,China is located in the eastern part of the Eurasian continent,with a large north–south range,resulting in a large temperature difference.Wild birds migrate two times annually along with the north–south range,including eastern,central and western routes in China.Wild birds are reported to carry influenza viruses from multiple sources,causing the virus to spread across a wide range of regions,which present great challenges for the prevention and control of avian influenza viruses(AIVs)(He et al.,2021;Shi and Gao,2021).展开更多
基金approved by the Animal Care and Use Committee of Changchun Veterinary Research Institute(approval number:SCXK,20210099)supported by the National Natural Science Foundation of China(82150202)the Beijing Nova Program(Z211100002121064)the Key Research Projects in Hebei Province(18227517D).
文摘Dear Editor,China is located in the eastern part of the Eurasian continent,with a large north–south range,resulting in a large temperature difference.Wild birds migrate two times annually along with the north–south range,including eastern,central and western routes in China.Wild birds are reported to carry influenza viruses from multiple sources,causing the virus to spread across a wide range of regions,which present great challenges for the prevention and control of avian influenza viruses(AIVs)(He et al.,2021;Shi and Gao,2021).
