山西省平陆县野生大天鹅H5N8高致病性禽流感疫情紧急流行病学调查  

Emergency Epidemiological Investigation on the Outbreak of H5N8 HPAI in Wild Whooper Swans in Pinglu County of Shanxi Province

作　　者：赵凯 孔军 侯丽芳 胡明明 图门巴雅尔 王治维[1] 王锦 孙杰[1] 宁艳[1] 张仲萍[1] 雷冲[1] 张昱 钮慧敏 雷宇平[1] 王仲兵[1] Zhao Kai;Kong Jun;Hou Lifang;Hu Mingming;Tumenbayaer;Wang Zhiwei;Wang Jin;Sun Jie;Ning Yan;Zhang Zhongping;Lei Chong;Zhang Yu;Niu Huimin;Lei Yuping;Wang Zhongbing(Shanxi Animal Disease Prevention and Control Center,Taiyuan,Shanxi 030027,China;Yuncheng Animal Husbandry and veterinary Development Center,Yuncheng,Shanxi 044000,China;Pinglu Animal Husbandry and Veterinary Development Center,Pinglu,Shanxi 044300,China;Yangqu Agriculture and rural Bureau,Yangqu,Shanxi 030100,China)

机构地区：[1]山西省动物疫病预防控制中心,山西太原030027 [2]运城市畜牧兽医发展中心,山西运城044000 [3]平陆县畜牧兽医发展中心,山西平陆044300 [4]阳曲县农业农村局,山西阳曲030100

出　　处：《中国动物检疫》2022年第4期26-29,共4页China Animal Health Inspection

摘　　要：2020年11月,山西省平陆县三湾大天鹅景区发现2只野生大天鹅不明原因死亡,经山西省动物疫病预防控制中心初诊,国家禽流感参考实验室确诊,诊断为H5N8亚型高致病性禽流感疫情。为查明疫情起因,摸清疫情情况,按照国家相关技术规范,组织相关部门开展了紧急流行病学调查和疫情处置工作,查找疫情的可能来源和扩散路径,研判疫情扩散风险,并提出合理化防控建议。经调查,此次疫情起因很可能是野生大天鹅在迁徙过程中已感染高致病性禽流感病毒,到达越冬地后发病死亡。经紧急疫情处置,疫情得到有效控制,家禽发生疫情的风险较小。本次疫情提示,候鸟迁徙期间是禽流感疫情高发期,要做好候鸟栖息地周边家禽养殖场的强制免疫和监测工作,落实生物安全防护措施,避免饲养的家禽与野禽接触,以降低由野生动物引发疫情的风险。In November 2020,it was reported that two wild whooper swans(Cygnus cygnus)died of unknown causes in Sanwan Whooper Swan Scenic Area in Pinglu County,Shanxi Province,which was confirmed to be an outbreak of H5N8 subtype highly pathogenic avian influenza(HPAI)as initially diagnosed by Shanxi Center for Animal Disease Prevention and Control,and fnally confrmed by National Avian Infuenza Reference Laboratory.In order to identify the causes and situations related to the outbreak,an emergency epidemiological investigation was organized according to related national specifcations to trace any possible sources and routes of spreading,judge the risk of spreading,and to put forward reasonable suggestions for epidemic prevention and control.As it was investigated that,the outbreak might well be caused by wild whooper swans that had been infected with HPAI virus during their migration and died of disease upon their arrival at wintering habitats.The outbreak was efectively controlled through emergency response,posing little risk to poultry.In conclusion,the migration period of migratory birds was a high incidence period of avian infuenza,which required to arrange compulsory immunization and monitoring for poultry farms around all habitats of migratory birds,and to implement bio-safety protection measures to avoid any contact between captive poultry and wild birds,so as to reduce any potential risk caused by wild animals.

关 键 词：高致病性禽流感 H5N8 大天鹅 暴发调查 应急处置 

分 类 号：S851.3[农业科学—预防兽医学]