1. Department of Veterinary Population Medicine University of Minnesota 1365 Gortner Avenue St Paul MN55108 USA
2. Department of Ecology Evolution and Behavior University of Minnesota St Paul MN55408 USA
3. INRA UMR346 EPIA Epidémiologie des maladies Animales et zoonotiques 63122 Saint‐Genès‐Champanelle France
4. Département de biologie Université de Sherbrooke 2500 Boulevard Université Sherbrooke QC Canada J1K 2R1
5. Zoological Pathology Program University of Illinois Urbana‐Champaign IL USA