1. College of Veterinary Medicine; Jilin University; Changchun China
2. Key Laboratory of Jilin Province for Zoonosis Prevention and Control; Institute of Military Veterinary; Academy of Military Medical Sciences; Changchun China
3. School of Public Health; Shandong University; Jinan China
4. State Key Laboratory of Veterinary Biotechnology; Harbin Veterinary Research Institute; Chinese Academy of Agricultural Sciences; Harbin China
5. College of Veterinary Medicine; Jilin Agriculture University; Changchun China
6. CAS Key Laboratory of Pathogenic Microbiology and Immunology; Institute of Microbiology, Chinese Academy of Sciences; Beijing China
7. Institute of Pharmacology and Toxicology; Academy of Military Medical Sciences; Beijing China