1. Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, China
2. Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
3. Department of Pathobiology and Veterinary Science, University of Connecticut, Storrs, Connecticut, USA
4. Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, the Ministry of Agriculture of China, Yangzhou University, Yangzhou, China