1. Southeastern Cooperative Wildlife Disease Study, College of Veterinary Medicine, University of Georgia, Athens, Georgia 30602
2. Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, Georgia 30602
3. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, School of Forest Resources, Athens, Georgia 30602
4. Florida Department of Health, Bureau of Laboratories— Tampa, 3602 Spectrum Blvd., Tampa, Florida 33612
5. Arthropod-Borne and Infectious Diseases Laboratory, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, Colorado 80523