1. Cornell Wildlife Health Lab, Cornell University College of Veterinary Medicine, 240 Farrier Rd., Ithaca, New York 14853, USA
2. Cheyenne River Sioux Tribe, Prairie Management Program, PO Box 590, Eagle Butte, South Dakota 57625, USA
3. Animal Health Diagnostic Center, Cornell University, 240 Farrier Rd., Ithaca, New York 14853, USA
4. US Geological Survey, National Wildlife Health Center, 6006 Schroeder Rd., Madison, Wisconsin 53711, USA
5. New York State Department of Health, Wadsworth Center Biodefense Laboratory, 120 New Scotland Ave., Albany, New York 12208, USA
6. Department of Microbiology and Immunology, Cornell University College of Veterinary Medicine, C4 119 Veterinary Medical Center, Ithaca, New York 14853, USA