Dalmann, Anja
Wernike, Kerstin
Reimann, Ilona
Finlaison, Deborah S.
Kirkland, Peter D.
Beer, Martin
Article History
Received: 8 November 2018
Accepted: 22 January 2019
First Online: 31 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The samples for virus isolation were taken by the responsible farm veterinarian in the context of the health-monitoring program of the farm complexes.