Funding for this research was provided by:
Xuhui District Health and Family Planning Commission (SHXH201634/SHXH201715)
the Key Laboratory of Public Health Safety (Fudan Univeristy), Ministry of Education, China (GW2019-9)
Received: 26 September 2018
Accepted: 19 June 2019
First Online: 8 July 2019
Ethics approval and consent to participate
: This project was approved by the Ethics Review Board of Xuhui District Center for Disease Control and Prevention (No. XHCDC201501). Outbreak investigations were conducted by the Xuhui District Center for Disease Control and Prevention according to Chinese guidelines on norovirus outbreak investigation, prevention and control (2015). As the investigation was an urgent public health response to the outbreak and interviewing and sample collection posed minimal risks, written informed consent was waived by the Ethics Review Board of Xuhui District Center for Disease Control and Prevention. Instead, oral informed consent was obtained from each participant on the spot or, for those aged < 16 years, from their parents or legal guardians by phone call prior to the sampling.
: Not applicable.
: The authors declare that they have no competing interests.