Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
China Animal Disease Control Center, Beijing 100125, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;
China Animal Disease Control Center, Beijing 100125, P.R.China;
National Animal Husbandry Service, Beijing 100125, P.R.China;
Key Laboratory of Zoonosis, Ministry of Agriculture/Department of Veterinary, Pathology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R.China;