1. Department of Pathobiology & Diagnostic Investigation, Michigan State University, 4125 Beaumont Road, Lansing, Michigan 48910, USA
2. Wildlife Disease Laboratory, Michigan Department of Natural Resources, 4125 Beaumont Road, Lansing, Michigan 48910, USA
3. Veterinary Diagnostic Laboratory, Michigan State University, 4125 Beaumont Road, Lansing, Michigan 48910, USA