論文

国際誌
2022年4月

Susceptibility of herons (family: Ardeidae) to clade 2.3.2.1 H5N1 subtype high pathogenicity avian influenza virus.

Avian pathology : journal of the W.V.P.A
  • Kosuke Soda
  • Yukiko Tomioka
  • Tatsufumi Usui
  • Yukiko Uno
  • Yasuko Nagai
  • Hiroshi Ito
  • Takahiro Hiono
  • Tomokazu Tamura
  • Masatoshi Okamatsu
  • Masahiro Kajihara
  • Naganori Nao
  • Yoshihiro Sakoda
  • Ayato Takada
  • Toshihiro Ito
  • 全て表示

51
2
開始ページ
146
終了ページ
153
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1080/03079457.2021.2022599

The pathogenicity of the H5 subtype high pathogenicity avian influenza viruses (HPAIVs) in Ardeidae bird species has not been investigated yet, despite the increasing infections reported. Therefore, the present study aimed to examine the susceptibility of the Ardeidae species, which had already been reported to be susceptible to HPAIVs, to a clade 2.3.2.1 H5N1 HPAIV. Juvenile herons (four grey herons, one intermediate egret, two little egrets, and three black-crowned night herons) were intranasally inoculated with 106 50% egg infectious dose of the virus and observed for 10 days. Two of the four grey herons showed lethargy and conjunctivitis; among them, one died at 6 days post-inoculation (dpi). The viruses were transmitted to the other two cohoused naïve grey herons. Some little egrets and black-crowned night herons showing neurological disorders died at 4-5 dpi; these birds mainly shed the virus via the oral route. The viruses predominantly replicated in the brains of birds that died of infection. Seroconversion was observed in most surviving birds, except some black-crowned night herons. These results demonstrate that most Ardeidae species are susceptible to H5 HPAIVs, sometimes with lethal effects. Herons are mostly colonial and often share habitats with Anseriformes, natural hosts of influenza A viruses; therefore, the risks of cluster infection and contribution to viral dissemination should be continuously evaluated. RESEARCH HIGHLIGHTSClade 2.3.2.1 H5N1 HPAIV causes lethal infections in Ardeidae sp.Viruses are transmitted among grey herons.Some herons with HPAIV showed conjunctivitis or neurological symptoms.HPAIV systemically replicated in herons tissues.

リンク情報
DOI
https://doi.org/10.1080/03079457.2021.2022599
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/34967244
ID情報
  • DOI : 10.1080/03079457.2021.2022599
  • PubMed ID : 34967244

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