Funding for this research was provided by:
XMU Training Program of Innovation and Enterpreneurship for Undergraduates. (2019Y0805)
The Open Research Fund of State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics (SKLVD2019KF005)
Science and Technology Program of Fujian Province (2020Y0002)
Xiamen New Coronavirus Prevention and Control Emergency Tackling Special Topic Program (3502Z2020YJ03)
Received: 25 November 2019
Accepted: 17 August 2020
First Online: 1 September 2020
Ethics approval and consent to participate
: This effort of outbreak control and investigation was part of CDC’s routine responsibility in Hubei Province; therefore, institutional review and informed consent were waived by Medical Ethics Committee of Hubei Center for Disease Control and Prevention on the following grounds: (1) all data analyzed were anonymized; (2) neither medical intervention nor biological samples were involved; (3) study procedures and results would not affect clinical management of patients in any form.
: Not applicable.
: The authors declare that they have no competing interests.