1. Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, Chongqing, China.
2. Chongqing Animal Disease Prevention and Control Center, Chongqing, China.
3. Department of Zoonoses, Kitasato University School of Veterinary Medicine, Towada, Japan.
4. Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China.