Surveillance and genomic characterization of Influenza A and D viruses in swine, Belgium and the Netherlands, 2019–2021 Universiteit Gent
During 2019–2021, we isolated 62 swine influenza A viruses in Belgium and the Netherlands. We also detected influenza D in pigs in the Netherlands. The ever-changing diversity of influenza viruses and the identification of influenza D emphasize the need for more virus surveillance.