1. Key Laboratory of Jilin Province for Zoonosis Prevention and Control, The Military Veterinary Institute, Academy of Military Medical Science of PLA, Changchun, 130122, PR China
2. Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, Virginia, 23298, USA
3. CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, PR China
4. Department of Influenza Vaccine, Changchun Institute of Biological Product, Changchun, 130062, PR China
5. College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, PR China
6. Department of Microbiology, University of Wisconsin La Crosse, La Crosse, Wisconsin, 54601, USA
7. State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150001, PR China