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

被引：39

作者：

Isoda, Norikazu ^{[1
,2
]}

Twabela, Augustin T. ^{[1
]}

Bazarragchaa, Enkhbold ^{[1
]}

Ogasawara, Kohei ^{[3
]}

Hayashi, Hirotaka ^{[1
]}

Wang, Zu-Jyun ^{[1
]}

Kobayashi, Daiki ^{[1
]}

Watanabe, Yukiko ^{[3
]}

Saito, Keisuke ^{[3
]}

Kida, Hiroshi ^{[2
,4
]}

Sakoda, Yoshihiro ^{[1
,2
]}

机构：

[1] Hokkaido Univ, Microbiol Lab, Dept Dis Control, Fac Vet Med, Sapporo, Hokkaido 0600818, Japan

[2] Hokkaido Univ, Int Collaborat Unit, Res Ctr Zoonosis Control, Sapporo, Hokkaido 0010020, Japan

[3] Inst Raptor Biomed Japan Co Ltd, Kushiro, Hokkaido 0840922, Japan

[4] Hokkaido Univ, Res Ctr Zoonosis Control, Sapporo, Hokkaido 0010020, Japan

来源：

VIRUSES-BASEL | 2020年 / 12卷 / 12期

关键词：

highly pathogenic avian influenza; clade; 2; 3; 4; DOMESTIC DUCKS; IDENTIFICATION; MIGRATION; BIRDS;

D O I：

10.3390/v12121439

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

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.

引用

页数：10

共 35 条

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