College of Biology, Hunan University, Changsha, China College of Computer Science and Electronic Engineering, Hunan University, Changsha, China.|National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China.|College of Computer Science and Electronic Engineering, Hunan University, Changsha, China.|College of Computer Science and Electronic Engineering, Hunan University, Changsha, China.|Center of System Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China Suzhou Institute of Systems Medicine, Suzhou, Jiangsu, China.|Center of System Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China Suzhou Institute of Systems Medicine, Suzhou, Jiangsu, China.|Department of Ecology and Evolution, University of Chicago, Chicago, IL, USA.|National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China.|National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China.|College of Biology, Hunan University, Changsha, China Center of System Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China Suzhou Institute of Systems Medicine, Suzhou, Jiangsu, China.