1. College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, P.R. China
2. Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, Jiangsu, P.R. China
3. Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, P.R. China
4. Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, Jiangsu, P.R. China
5. School of Medicine, Yangzhou University, Yangzhou, Jiangsu, P.R. China