1. Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana—Champaign, Brookfield, Illinois, USA
2. Zoological Pathology Program, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana—Champaign, Brookfield, Illinois, USA
3. Illinois Natural History Survey, University of Illinois at Urbana—Champaign, Champaign, Illinois, USA
4. Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana—Champaign, Urbana, Illinois, USA
5. Wildlife Epidemiology Laboratory, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana—Champaign, Urbana, Illinois, USA