Trends of SARS-CoV-2 Infection Among Couriers in Risky Business After the Optimization of Prevention and Control Measures — China, December 2022 to January 2023

Yu Wu, Fan Ding, Jue Liu, Wenzhan Jing, Wenxin Yan, Chenyuan Qin, Fangyuan Li, Yanping Zhang, Guoqing Shi, Wannian Liang, Qun Li, Min Liu. Trends of SARS-CoV-2 Infection Among Couriers in Risky Business After the Optimization of Prevention and Control Measures — China, December 2022 to January 2023J. China CDC Weekly, 2023, 5(11): 248-254. DOI: 10.46234/ccdcw2023.045