Surveillance and Genomic Characterization of Influenza A and D Viruses in Swine, Belgium and the Netherlands, 2019?2021, Parys, Anna, Nick Vereecke, Elien Vandoorn, Sebastiaan Theuns, and Van Reeth Kristien , Emerging Infectious Diseases, Jan-07-2023, Volume 29, Issue 7, (2023)