1. Department of Veterinary Preventive Medicine; College of Veterinary Medicine; Jilin University; Changchun China
2. College of Food Science and Engineering; Jilin University; Changchun China
3. CAS Key Laboratory of Special Pathogens and Biosafety; Wuhan Institute of Virology; Chinese Academy of Sciences; Hubei China
4. Comprehensive Pneumology Center; Institute of Lung Biology and Disease (iLBD); Helmholtz Zentrum Muenchen; Munich Germany
5. CAS Key Laboratory of Pathogenic Microbiology and Immunology; Institute of Microbiology; Chinese Academy of Sciences; Beijing China