1. State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases (Zhejiang University), National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Chang-Bai Road 155, Beijing 102206, China
2. Center for Global Public Health, Chinese Center for Disease Control and Prevention, Chang-Bai Road 155, Beijing 102206, China