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. 2021 Jun;26(24):2100439.
doi: 10.2807/1560-7917.ES.2021.26.24.2100439.

Isolation of clade 2.3.4.4b A(H5N8), a highly pathogenic avian influenza virus, from a worker during an outbreak on a poultry farm, Russia, December 2020

Olga G Pyankova  1 , Ivan M Susloparov  1 , Anastasia A Moiseeva  1 , Natalia P Kolosova  1 , Galina S Onkhonova  1 , Aleksey V Danilenko  1 , Elena V Vakalova  2 , Gennady L Shendo  2 , Natalia N Nekeshina  3 , Lyudmila N Noskova  3 , Julia V Demina  4 , Natalia V Frolova  4 , Elena V Gavrilova  1 , Rinat A Maksyutov  1 , Aleksandr B Ryzhikov  1
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Isolation of clade 2.3.4.4b A(H5N8), a highly pathogenic avian influenza virus, from a worker during an outbreak on a poultry farm, Russia, December 2020

Olga G Pyankova et al. Euro Surveill. 2021 Jun.

Abstract

This study presents the isolation of influenza A(H5N8) virus clade 2.3.4.4b from a poultry worker during an outbreak of highly pathogenic avian influenza A(H5N8) among chickens at a poultry farm in Astrakhan, Russia in December 2020. Nasopharyngeal swabs collected from seven poultry workers were positive for influenza A(H5N8), as confirmed by RT-PCR and sequencing. The influenza A(H5N8) virus was isolated from one of the human specimens and characterised. Sporadic human influenza A(H5)2.3.4.4. infections represent a possible concern for public health.

Keywords: Clade 2.3.4.4; H5N8; HPAIV; avian influenza virus; human influenza; phylogenetic; surveillance.

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Conflict of interest statement

Conflict of interest: None declared.

Figures

Figure
Figure
Phylogenetic relationships of the HA gene of influenza A(H5Nx) clade 2.3.4.4 viruses, influenza A(H5N8) on a poultry farm, Astrakhan, Russia, December 2020
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