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Re-Invasion of H5N8 High Pathogenicity Avian Influenza Virus Clade 2.3.4.4b in Hokkaido, Japan, 2020

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Title: Re-Invasion of H5N8 High Pathogenicity Avian Influenza Virus Clade 2.3.4.4b in Hokkaido, Japan, 2020
Authors: Isoda, Norikazu Browse this author →KAKEN DB
Twabela, Augustin T. Browse this author
Bazarragchaa, Enkhbold Browse this author
Ogasawara, Kohei Browse this author
Hayashi, Hirotaka Browse this author
Wang, Zu-Jyun Browse this author
Kobayashi, Daiki Browse this author
Watanabe, Yukiko Browse this author
Saito, Keisuke Browse this author
Kida, Hiroshi Browse this author →KAKEN DB
Sakoda, Yoshihiro Browse this author →KAKEN DB
Keywords: highly pathogenic avian influenza
clade 2.3.4.4
H5N8
Issue Date: Dec-2020
Publisher: MDPI
Journal Title: Viruses-Basel
Volume: 12
Issue: 12
Start Page: 1439
Publisher DOI: 10.3390/v12121439
Abstract: Global dispersion of high pathogenicity avian influenza (HPAI), especially that caused by H5 clade 2.3.4.4, has threatened poultry industries and, potentially, human health. An HPAI virus, A/northern pintail/Hokkaido/M13/2020 (H5N8) (NP/Hok/20) belonging to clade 2.3.4.4b, was isolated from a fecal sample collected at a lake in Hokkaido, Japan where migratory birds rested, October 2020. In the phylogenetic trees of all eight gene segments, NP/Hok/20 fell into in the cluster of European isolates in 2020, but was distinct from the isolates in eastern Asia and Europe during the winter season of 2017-2018. The antigenic cartography indicates that the antigenicity of NP/Hok/20 was almost the same as that of previous isolates of H5 clade 2.3.4.4b, whereas the antigenic distances from NP/Hok/20 to the representative strains in clade 2.3.4.4e and to a strain in 2.3.4 were apparently distant. These data imply that HPAI virus clade 2.3.4.4b should have been delivered by bird migration despite the intercontinental distance, although it was not defined whether NP/Hok/20 was transported from Europe via Siberia where migratory birds nest in the summer season. Given the probability of perpetuation of transmission in the northern territory, periodic updates of intensive surveys on avian influenza at the global level are essential to prepare for future outbreaks of the HPAI virus.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/80402
Appears in Collections:国際連携研究教育局 : GI-CoRE (Global Institution for Collaborative Research and Education : GI-CoRE) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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