Surveillance and Genomic Characterization of Influenza A and D Viruses in Swine, Belgium and the Netherlands, 2019–2021

Abstract

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.

Keywords

• influenza
• influenza A virus
• influenza D virus
• swine
• genetic characterization
• subtyping