2020 年新型 H5N8、H5N5 和 H5N1 分支 2.3.4.4 高致病性禽流感的出现和传播。
Emergence and spread of novel H5N8, H5N5 and H5N1 clade 2.3.4.4 highly pathogenic avian influenza in 2020.
机构信息
Department of Virology, Animal and Plant Health Agency, OIE/FAO International Reference Laboratory for Avian Influenza, Swine Influenza and Newcastle Disease Virus, Surrey, UK.
Department of Pathobiology and Population Sciences, Royal Veterinary College, Addlestone, UK.
出版信息
Emerg Microbes Infect. 2021 Dec;10(1):148-151. doi: 10.1080/22221751.2021.1872355.
Analyses of HPAI H5 viruses from poultry outbreaks across a wide Eurasian region since July 2020 including the Russian Federation, Republics of Iraq and Kazakhstan, and recent detections in migratory waterfowl in the Netherlands, revealed undetected maintenance of H5N8, likely in galliform poultry since 2017/18 and both H5N5 and H5N1. All viruses belong to A/H5 clade 2.3.4.4b with closely related HA genes. Heterogeneity in Eurasian H5Nx HPAI emerging variants threatens poultry production, food security and veterinary public health.
自 2020 年 7 月以来，在广泛的欧亚地区对家禽疫情中的高致病性禽流感 H5 病毒进行的分析，包括俄罗斯联邦、伊拉克共和国和哈萨克斯坦共和国，以及最近在荷兰迁徙水禽中的检测结果表明，H5N8 病毒一直在未经检测的情况下存在，可能自 2017/18 年以来就在家禽中存在，同时还存在 H5N5 和 H5N1 病毒。所有病毒都属于 A/H5 分支 2.3.4.4b，具有密切相关的 HA 基因。欧亚 H5Nx 高致病性禽流感新兴变异株的异质性威胁着家禽生产、粮食安全和兽医公共卫生。
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