Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Chinese Center for Disease Control and Prevention (China CDC) - National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC) - National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Gansu Provincial Center or Disease Control and Prevention - Institute for Plague and Brucellosis Prevention and Control, affiliation not provided to SSRN, affiliation not provided to SSRN, Akesai Kazakh Autonomous County Center for Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID) and Chinese Center for Disease Control and Prevention (China CDC) - State Key Laboratory of Infectious Disease Prevention and Control (SKLID)