1. National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing 102206, PR China
2. Department of Infection Control, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
3. Shenzhen Center for Disease Control and Prevention, Shenzhen 518073, PR China
4. Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing 102206, PR China
5. Institute of Public Health, Nankai University, Tianjin 300071, PR China