Chen Haiqian, Shi Leiyu, Zhang Yuyao, Wang Xiaohan, Sun Gang
Department of Health Management, School of Health Management, Southern Medical University, Guangzhou, Guangdong, 510515, People's Republic of China.
Department of Health Policy and Management, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, 21205, USA.
Risk Manag Healthc Policy. 2021 Sep 21;14:3955-3963. doi: 10.2147/RMHP.S317910. eCollection 2021.
This study aimed to analyze the distribution characteristics and influencing factors for the interval between entering mainland China and the diagnosis of imported COVID-19 cases in Guangdong province, in order to provide valuable experience for global pandemic in prevention and control.
We collected publicly reported data between March 1 and June 2, 2020. Univariate and multivariate regression analyses were performed to identify the significant associated factors with the interval between entering mainland China and diagnosis of imported COVID-19 cases.
As of June 2, 2020, a total of 200 imported cases were reported in Guangdong province. The average interval time was 4.25 days with a median of 2 days, the interval time of 68% cases was between 1 and 3 days. The multivariate model results show that the three following factors were critical influencing factors: nationality was foreign nationality ( = 0.037), results of initial nucleic acid detection were negative ( = 0.000) and the interval between entering mainland China and the detection of positive results (T) exceeded two days ( = 0.008).
The results suggested that all travelers and returning resident should be taken strict sampling and testing, and isolation measures, improved the accuracy of the initial nucleic acid test results, and the detection efficiency and shortening the interval between entering mainland China and detection of positive results.
本研究旨在分析广东省输入性新冠肺炎病例从进入中国大陆至确诊的间隔时间的分布特征及影响因素，为全球疫情防控提供宝贵经验。
收集2020年3月1日至6月2日公开报告的数据。进行单因素和多因素回归分析，以确定与输入性新冠肺炎病例从进入中国大陆至确诊的间隔时间显著相关的因素。
截至2020年6月2日，广东省共报告200例输入病例。平均间隔时间为4.25天，中位数为2天，68%的病例间隔时间在1至3天之间。多因素模型结果显示，以下三个因素是关键影响因素：国籍为外国国籍（P = 0.037）、初次核酸检测结果为阴性（P = 0.000）以及从进入中国大陆至检测出阳性结果的间隔时间（T）超过两天（P = 0.008）。
结果表明，应对所有旅行者和归国居民采取严格的采样检测及隔离措施，提高初次核酸检测结果的准确性，提高检测效率并缩短从进入中国大陆至检测出阳性结果的间隔时间。
