1. State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China
2. College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
3. Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, China
4. Department of Animal Disease Diagnosis, Hubei Animal Disease Prevention and Control Centre, Wuhan, China