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Volume 28, Number 7—July 2022
Dispatch

Genetically Diverse Highly Pathogenic Avian Influenza A(H5N1/H5N8) Viruses among Wild Waterfowl and Domestic Poultry, Japan, 2021

Kosuke Okuya, Junki Mine, Kaori Tokorozaki, Isshu Kojima, Mana Esaki, Kohtaro Miyazawa, Ryota Tsunekuni, Saki Sakuma, Asuka Kumagai, Yoshihiro Takadate, Yuto Kikutani, Tsutomu Matsui, Yuko Uchida, and Makoto OzawaComments to Author 
Author affiliations: Kagoshima University, Kagoshima, Japan (K. Okuya, I. Kojima, M. Esaki, M. Ozawa); National Agriculture and Food Research Organization, Tsukuba, Japan (J. Mine, K. Miyazawa, R. Tsunekuni, S. Sakuma, A. Kumagai, Y. Takadate, Y. Uchida); Kagoshima Crane Conservation Committee, Izumi, Japan (K. Tokorozaki, T. Matsui, M. Ozawa); Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan (Y. Kikutani)

Main Article

Figure 2

Phylogenetic tree of hemagglutinin genes of genetic group 2 (G2) of highly pathogenic avian influenza A(H5N1/H5N8) viruses isolated on the Izumi Plain, Japan, in November 2021. We phylogenetically analyzed the nucleotide sequences of the genes from A/environment/Kagoshima/KU-ngrB4/2021 (mixed), A/chicken/Kagoshima/21A6T/2021 (H5N1), A/chicken/Kagoshima/B3T/2021 (H5N8), and A/hooded crane/Kagoshima/KU-5T/2021 (H5N8) with representative counterparts by using the maximum-likelihood method with a bootstrapping set of 1,000 replicates. Bold text indicates viruses isolated in this study. Bootstrap values >70% are shown at the nodes. Scale bar indicates the number of nucleotide substitutions per site. HPAI, highly pathogenic avian influenza; LPAI, low pathogenicity avian influenza.

Figure 2. Phylogenetic tree of hemagglutinin genes of genetic group 2 (G2) of highly pathogenic avian influenza A(H5N1/H5N8) viruses isolated on the Izumi Plain, Japan, in November 2021. We phylogenetically analyzed the nucleotide sequences of the genes from A/environment/Kagoshima/KU-ngrB4/2021 (mixed), A/chicken/Kagoshima/21A6T/2021 (H5N1), A/chicken/Kagoshima/B3T/2021 (H5N8), and A/hooded crane/Kagoshima/KU-5T/2021 (H5N8) with representative counterparts by using the maximum-likelihood method with a bootstrapping set of 1,000 replicates. Bold text indicates viruses isolated in this study. Bootstrap values >70% are shown at the nodes. Scale bar indicates the number of nucleotide substitutions per site. HPAI, highly pathogenic avian influenza; LPAI, low pathogenicity avian influenza.

Main Article

Page created: May 10, 2022
Page updated: June 18, 2022
Page reviewed: June 18, 2022
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