One Health Center School of Public Health Sun Yat-sen University Guangzhou Guangdong 510080 China;
Key Laboratory of Livestock Infectious Diseases in Northeast China Ministry of Education Shenyang Agricultural University Shenyang Liaoning 110866 China;
College of Animal Science and Veterinary Medicine Shenyang Agricultural University Shenyang Liaoning 110866 China;
Department of Health Law Policy and Management School of Public Health Boston University Boston MA 02215 USA;
Animal Experiment Center Sun Yat-sen University Guangzhou Guangdong 510080 China;
Department of Biological Science and Technology School of Life Sciences Sun Yat-sen University Guangzhou Guangdong 510080 China;
Center for Infection and Immunity Mailman School of Public Health Columbia University New York NY 10032 USA;