1. School of Public Health, Jilin University, Changchun 130021, China
2. College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin 132101, China
3. Research Unit of Key Technologies for Prevention and Control of Virus Zoonoses, Chinese Academy of Medical Sciences, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
4. Department of Food Science and Engineering, Inner Mongolia Agricultural University, Huhhot 010010, China