Research Institute for Biological Safety Problems (RIBSP), Committee of Science of the Ministry of Education and Science, Gvardeiskiy, Korday district, Zhambyl region, Kazakhstan.
Research Institute for Biological Safety Problems (RIBSP), Committee of Science of the Ministry of Education and Science, Gvardeiskiy, Korday district, Zhambyl region, Kazakhstan.
Virus Res. 2022 Oct 15;320:198898. doi: 10.1016/j.virusres.2022.198898. Epub 2022 Aug 20.
An active surveillance study of avian influenza viruses (AIVs) in wild birds was carried out in Kazakhstan in 2018-2019. In total, 866 samples were collected from wild birds and analyzed for influenza viruses using molecular and virological tests. Genome segments of Asian, European, and Australian lineages were detected in 25 (4.6%) out of 541 waterfowl samples positive for subtype H3N8, and in two (0.6%) out of 325 H3N8 positive samples from terrestrial birds. No highly pathogenic avian influenza virus (AIV) was detected. The results indicated transmission of closely related strains or identical subtypes of AIVs by a flock-unit of migratory birds or annual cyclical pattern of subtype dominance. The simultaneous circulation of genome segments of the Asian, European and Australian genetic lineages of H3N8 AIVs in wild birds in Kazakhstan indicated the important role of Central Asia as a transmission hub of AI viruses linking the East Asian migratory flyways with European flyways and vice versa.
2018-2019 年，在哈萨克斯坦开展了一项针对野生鸟类中禽流感病毒（AIV）的主动监测研究。总共从野生鸟类中采集了 866 个样本，并使用分子和病毒学测试对流感病毒进行了分析。在 541 份 H3N8 亚型水禽阳性样本中，有 25 份（4.6%）检测到亚洲、欧洲和澳大利亚谱系的基因组片段，在 325 份 H3N8 阳性陆地鸟类样本中有 2 份（0.6%）检测到。未检测到高致病性禽流感病毒（AIV）。结果表明，候鸟群或亚型优势的年度周期性模式传播了密切相关的 AIV 株或相同的亚型。哈萨克斯坦野生鸟类中 H3N8 AIV 的亚洲、欧洲和澳大利亚遗传谱系的基因组片段同时循环，表明中亚作为连接东亚迁徙飞行路线与欧洲飞行路线的 AI 病毒传播枢纽的重要作用。
