1. Division for Infection Control and Environmental Health Department of Virology Norwegian Institute of Public Health Oslo Norway
2. Department of Production Animal Clinical Sciences Faculty of Veterinary Medicine Norwegian University of Life Sciences Oslo Norway
3. Division for Infection Control and Environmental Health Department of Pest Control Norwegian Institute of Public Health Oslo Norway
4. Division for Infection Control and Environmental Health Department of Infectious Diseases Epidemiology and Modelling Norwegian Institute of Public Health Oslo Norway
5. Department of Medical Biochemistry and Microbiology/Zoonosis Science Center Uppsala University Uppsala Sweden
6. Marie Bashir Institute for Infectious Diseases and Biosecurity Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School The University of Sydney Sydney NSW Australia
7. University of South East Norway Bø i Telemark Norway