1. Southeastern Cooperative Wildlife Disease Study, Department of Parasitology, College of Veterinary Medicine and School of Forest Resources, The University of Georgia, Athens, Georgia 30602, USA
2. Department of Medical Microbiology, College of Veterinary Medicine, The University of Georgia, Athens, Georgia 30602, USA
3. Louisiana Department of Wildlife and Fisheries, P.O. Box 15570, Baton Rouge, Louisiana 70895, USA