Abstract：Objective To analyze the characteristics of collaborative-tracking information on contacts exposed to patients with SARS-CoV-2 infection in Nanjing, and to provide references for optimizing the function of the collaborative-tracking information system and improving the epidemic disposal process. Methods The collaborative-tracking information on contacts exposed to patients with SARS-CoV-2 infection in Nanjing from January 1 to October 31, 2021 was queried and downloaded from the Contact Tracing and Management System for Acute Infectious Diseases in Jiangsu Province for subsequent analysis. Results From January 1 to October 31, 2021, we handled 16,239 letters about collaborative-tracking information related to Nanjing, including 7,464 letters about close contacts, 7,633 letters about sub-close contacts and 1,142 letters about general contacts. The volume of letters grew slowly from month to month; however, there was a breakthrough surge in July and August. The letters involved 31 provinces (autonomous regions and municipalities directly under the central government) on the Chinese mainland. The day control rate of close contacts from other cities in Jiangsu Province was higher than that of close contacts from other provinces (80.15% vs. 48.63%, χ2=38.002, P<0.05). The next-day control rate and delay control rate were lower than those of close contacts from other provinces (11.76% vs. 38.70%, χ2=31.967, P<0.05; 2.21% vs. 10.27%, χ2=8.488, P<0.05). Conclusion It is necessary to establish a set of collaborative-tracking information system that can be used across the country. The speed of information input, transmission and feedback needs to accelerate so as to gain precious time for the epidemic prevention and control. All localities should keep enhancing their capacities to deal with the epidemic, and always be ready to respond to the outbreak of SARS-CoV-2 infection at any time.
卞增惠, 许阳婷, 孙红敏, 张钟. 南京市新冠感染疫情协查信息特征分析[J]. 实用预防医学, 2023, 30(3): 317-320.
BIAN Zeng-hui, XU Yang-ting, SUN Hong-min, ZHANG Zhong. Characteristics of collaborative-tracking information about contacts exposed to patients with SARS-CoV-2 infection in Nanjing. , 2023, 30(3): 317-320.