Surveillance of Influenza A Virus in Migratory Waterfowl in Northern Europe

Anders Wallensten, V Munster, Neus Latorre Margalef (Lnu), M Brytting, J Elmberg, R A M Fouchier, Thord Fransson, Paul D Haemig, Malin Karlsson, Åke Lundkvist, A D M E Osterhaus, M Stervander, Jonas Waldenström (Lnu) and Björn Olsen (Lnu)