机构：Chinese Field Epidemiology Training Program (CFETP), Beijing 100050, China NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China,NHC Key
SARS-CoV-2" title="Possible processes and origin-tracing methods of "human-to-item" contamination and "item-to-human" infection with SARS-CoV-2">