1. Department of Microbiology and Molecular Genetics, University of California, Davis, One Shields Avenue, Davis, California 95616, USA
2. Department of Pathology, College of Veterinary Medicine, University of Georgia, 501 D. W. Brooks Drive, Athens, Georgia 30602, USA
3. Odum School of Ecology, Center for the Ecology of Infectious Diseases and Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, 501 D. W. Brooks Drive, Athens, Georgia 30602, USA
4. Southeastern Cooperative Wildlife Disease Study, University of Georgia, 589 D. W. Brooks Drive, Athens, Georgia 30602, USA
5. Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, One Shields Avenue, Davis, California 95616, USA