Zhu, Wentao
Pu, Ji
Jin, Dong
Lu, Shan
Yang, Jing
Xu, Jianguo
Article History
Received: 6 July 2025
Accepted: 23 October 2025
First Online: 21 November 2025
Declarations
:
: This study was part of long-term surveillance program and approved by the ethics committee of the National Institute for Communicable Disease Control and Prevention of China CDC (ICDC-2018004).
: The authors declare no competing interests.