Funding for this research was provided by:
National Major Science and Technology Projects of China (2018ZX10714002 and 2018ZX10101003)
National Natural Science Foundation of China (81673237, and 81872678)
National Key R&D Program of China (2017YFC1600105 and 2018YFC1603801)
Received: 26 February 2019
Accepted: 29 June 2020
First Online: 15 July 2020
Ethics approval and consent to participate
: The stool samples from human patients with diarrhea were collected and screened in sentinel hospitals based on a national pathogen monitoring system, during our routine surveillance of <i>S.</i> Typhimurium. This study was approved by the ethics committees of the Academy of Military Medical Sciences (Beijing, China). Permission and written informed consent was obtained from patients for sample collection and subsequent usage for research purposes. Written informed consent for participants under 16 was obtained from the parents/guardians of the participants.
: Not applicable.
: The authors declare that they have no competing interests.