1. Center of Excellence for Vector-Borne Diseases, Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University (CVM-KSU), Manhattan, Kansas, USA
2. Kansas State Veterinary Diagnostic Laboratory, CVM-KSU, Manhattan, Kansas, USA
3. Comparative Medicine Group, CVM-KSU, Manhattan, Kansas, USA
4. Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA