Evidence for flock transmission of individual subtypes and strains of avian influenza viruses: A monitoring study of wild birds in Kazakhstan
Sultankulova K.T. Dzhekebekov K.K. Orynbayev M.B. Burashev Y.D. Melisbek A.M. Barmak S.M. Kozhabergenov N.S. Issabek A.U. Chervyakova O.V. Namet A.M. Zakarya K.D. Fereidouni S.
15 October 2022Elsevier B.V.
Virus Research
2022#320
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.
Avian influenza virus , H3N8 subtype , Kazakhstan , Phylogenetic analysis , Wild birds monitoring
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Research Institute for Biological Safety Problems (RIBSP), Committee of Science of the Ministry of Education and Science, Gvardeiskiy, Korday district, Zhambyl region, Kazakhstan
Zhangir Khan University (West Kazakhstan Technical University), Uralsk, 090009, Kazakhstan
Al-Farabi Kazakh National University, Almaty, Kazakhstan
MVA Group Scientific-Research Production Center Ltd, Kazakhstan
Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Vienna, Austria
Research Institute for Biological Safety Problems (RIBSP)
Zhangir Khan University (West Kazakhstan Technical University)
Al-Farabi Kazakh National University
MVA Group Scientific-Research Production Center Ltd
Research Institute of Wildlife Ecology
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