1. State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
2. College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
3. Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Hei Long Jiang, China
4. CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China