1. Hebei Key Laboratory of Preventive Veterinary Medicine; Hebei Normal University of Science and Technology; Qinhuangdao Hebei China
2. The Second Hospital of Qinhuangdao; Qinhuangdao Hebei China
3. College of Animal Science and Technology; Jilin Agriculture University; Changchun Hebei China
4. Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Veterinary Medicine; Yangzhou University; Yangzhou China