Chinese Center for Disease Control and Prevention (China CDC) - Shanghai Municipal Center for Disease Control and Prevention, Fudan University, Tongji University - Shanghai Tongji Hospital, Chinese Center for Disease Control and Prevention (China CDC) - Shanghai Municipal Center for Disease Control and Prevention, Fudan University, Chinese Center for Disease Control and Prevention (China CDC) - Shanghai Municipal Center for Disease Control and Prevention, Jing’an District Center for Disease Control and Prevention, Jing’an District Center for Disease Control and Prevention, Fudan University - Shanghai Institute of Infectious Disease and Biosecurity, Fudan University - School of Public Health, Fudan University, Fudan University - Shanghai Institute of Infectious Disease and Biosecurity and Fudan University - Department of Epidemiology and Health Statistics