1. Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MI, USA
2. Mississippi Field Station, National Wildlife Research Center, Wildlife Services, Animal and Plant Health Inspection Service, US Department of Agriculture, Mississippi State, MI, USA
3. National Wildlife Research Center, Wildlife Services, Animal and Plant Health Inspection Service, US Department of Agriculture, Fort Collins, CO, USA
4. US Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, Fort Collins, CO, USA
5. Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
6. Department of Pathobiology and Population Medicine, College of Veterinary Medicine, Mississippi State University, Mississippi State, MI, USA