Funding for this research was provided by:
National Natural Science Foundation of China (81473064 & 81773543)
Text and Data Mining valid from 2019-12-01
Received: 16 April 2019
Accepted: 22 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: Data were collected from the official HFMD surveillance system in China and no confidential information was involved. The research study protocol was approved by the Institutional Review Board at Sun Yat-sen University School of Public Health (No. 201415).
: Not applicable.
: The authors declare that they have no competing interests.