1. Equine Infectious Disease Laboratory, Department of Large Animal Clinical Sciences Texas A&M University, School of Veterinary Medicine & Biomedical Sciences College Station Texas USA
2. Department of Veterinary Pathobiology Texas A&M University, School of Veterinary Medicine & Biomedical Sciences College Station Texas USA
3. Department of Microbial Pathogenesis & Immunology Texas A&M University, School of Medicine College Station Texas USA