Changxu Song is the director of the Pig Disease Functional Laboratory at the National Swine Breeding Engineering Technology Research Center of South China Agricultural University, a researcher at the College of Animal Science, and a doctoral supervisor. He is a standing director of the Livestock Infectious Diseases Branch of the Chinese Society of Animal Husbandry and Veterinary Medicine, a standing director of the Veterinary Public Health Branch of the same society, a member of the National Animal Disease Prevention Expert Committee, and a member of the Expert Committee for Emergency Management of Major Animal Epidemics in Guangdong Province. He also serves on the editorial boards of “Swine Industry Science” and “Guangdong Swine Industry”, and is a peer reviewer for journals including “Virology”, “Chinese Veterinary Science”, “Journal of Animal Husbandry and Veterinary Medicine”, “Archives of Virology”, “BMC Veterinary Research”, “PLosone”, and “Emerging Infectious Diseases”. He has led several key national research projects, including the National Key R&D Program, national industry special projects, the "863" program, major scientific projects in Guangdong Province, key and general projects of the Guangdong Natural Science Foundation, projects for the swine industry system by the Guangdong Provincial Department of Agriculture, and various Guangzhou science and technology projects. He has published over 100 papers, several of which appeared in prestigious journals like “Emerging Infectious Diseases”, “Circulation”, “Circulation Research”, “Journal of Clinical Investigation”, and “Transboundary and Emerging Diseases”. He holds four authorized national invention patents and received the second prize for Scientific and Technological Progress in Guangdong Province (first author), as well as the third prize for Science and Technology Innovation by the General Administration of Quality Supervision, Inspection and Quarantine (second author).  His research focuses on swine blue ear disease, porcine epidemic diarrhea, porcine circovirus, and staphylococci. He was the first to report and study the variant strain of porcine epidemic diarrhea that emerged in China in 2010 on an international scale. He has extensive clinical diagnostic and technical service experience in pig diseases.