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. 2022 Jun;167(6):1455-1459.
doi: 10.1007/s00705-022-05442-6. Epub 2022 Apr 26.

A new clade 2.3.4.4b H5N1 highly pathogenic avian influenza genotype detected in Europe in 2021

Alexander Nagy  1 , Lenka Černíková  2 , Martina Stará  2
Affiliations

A new clade 2.3.4.4b H5N1 highly pathogenic avian influenza genotype detected in Europe in 2021

Alexander Nagy et al. Arch Virol. 2022 Jun.

Abstract

Despite their widespread distribution, only a single genotype variant of clade 2.3.4.4b H5N1 influenza viruses has been found so far in Europe. Here, we report the detection of a new highly pathogenic avian influenza H5N1 genotype in geese and ducks from a backyard farm in the Czech Republic. Phylogenetic analysis revealed that the Czech H5N1 virus retained the A/Eurasian_Wigeon/Netherlands/1/2020-like backbone with an altered PB2 segment obtained from co-circulating low-pathogenic avian influenza viruses.

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