1. Department of Biological and Environmental Science, University of Jyvaskyla, 40014 Jyvaskyla, Finland
2. Department of Health Security, Finnish Institute for Health and Welfare, 00271 Helsinki, Finland
3. Department of Ecology and Genetics, University of Oulu, 90014 Oulu, Finland
4. Wildlife Ecology Group, Natural Resources Institute Finland, 00790 Helsinki, Finland
5. Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland
6. Research infrastructure services, Natural Resources Institute Finland, 00790 Helsinki, Finland
7. Department of Virology, University of Helsinki, 00014 Helsinki, Finland
8. Department of Virology, University of Helsinki and Helsinki University Hospital, 00029 Helsinki, Finland