1. Section for Zoonotic Ecology and Epidemiology, School of Pure and Applied Natural Sciences, University of Kalmar391 82 Kalmar, Sweden
2. Aquatic Biology and Chemistry Group, Kristianstad University291 88 Kristianstad, Sweden
3. Department of Virology, Erasmus Medical Center3015GE Rotterdam, The Netherlands
4. Section of Infectious Diseases, Department of Medical Sciences, Uppsala University Hospital751 85 Uppsala, Sweden
5. Bird Ringing Centre, Swedish Museum of Natural History104 05 Stockholm, Sweden
6. Kalmar County Hospital391 85 Kalmar, Sweden
7. Department of Animal Ecology, Lund University223 62 Lund, Sweden