Shanghai Key Laboratory of Veterinary Biotechnology School of Agriculture and Biology Shanghai Jiao Tong University Shanghai 200240 China;
Shanghai Veterinary Research Institute Chinese Academy of Agricultural Sciences Shanghai 200241 China;
Shanghai Key Laboratory of Veterinary Biotechnology School of Agriculture and Biology Shanghai Jiao Tong University Shanghai 200240 China;
School of Medicine Jiangsu University Zhenjiang 2012013 China;
Shanghai Veterinary Research Institute Chinese Academy of Agricultural Sciences Shanghai 200241 China;
Shanghai Pudong New District Center for Animal Diseases Control and Prevention Shanghai 201299 China;
Shanghai Key Laboratory of Veterinary Biotechnology School of Agriculture and Biology Shanghai Jiao Tong University Shanghai 200240 China;
Shanghai Key Laboratory of Veterinary Biotechnology School of Agriculture and Biology Shanghai Jiao Tong University Shanghai 200240 China;
