Incursion of novel highly pathogenic avian influenza A(H5N8) virus, the Netherlands, October 2020

Beerens, Nancy; Heutink, Rene; Harders, Frank; Roose, Marit; Pritz-Verschuren, Sylvia B.E.; Germeraad, Evelien A.; Engelsma, Marc


Highly pathogenic avian influenza A(H5N8) virus was detected in mute swans in the Netherlands during October 2020. The virus shares a common ancestor with clade viruses detected in Egypt during 2018-2019 and has similar genetic composition. The virus is not directly related to H5N8 viruses from Europe detected in the first half of 2020.