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      Epidemiological characteristics of 42 cases of COVID-19 in Dazhou, Sichuan

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          Objective To analyze epidemiological characteristics of coronavirus disease 2019(COVID-19) in Dazhou City, we provide a scientific basis for prevention and control of COVID-19 in Dazhou City.

          Methods Statistical analysis of 42 cases of COVID-19 reported in Dazhou were conducted from January to February 2020.

          Results Cases were reported in 7 counties (cities, districts) of Dazhou City. The population was mainly 30–49 years old, and no confirmed cases of minors were reported. The peak incidence was from January 26 to February 5, 2020. Clinical symptoms were mainly fever (59.52%) and cough (64.29%), and the abnormal rate of lung was 90.48% in early CT examination. 18 of the 19 imported cases had a history of residence or staying in Wuhan. The median number of days from onset to hospitalization, confirmed to discharge, and long duration of viral shedding were 5.5, 18.5 and 7.0 days, inter-quartile range of days were 5.5, 8.0 and 6.0 days, respectively.

          Conclusion In January, the imported epidemic were the main ones in Dazhou, and in February, local cases kept increasing. Later, the epidemic disease was gradually controlled after the strict control measures were implemented. Fever and cough are used as clinical screening indicators for COVID-19, and CT examination can be used as an early screening method; Shortening the time from onset to hospitalization and ensuring the operation of fever clinics can reduce the spread of the disease; The time of hospitalization and the average time of carrying virus of patients are relatively long. Long-term treatment, psychological counseling and improving patient’s coordination should be prepared during treatment. The aggregated epidemic in Dazhou City is serious, and there is a gap in grass-roots work. In the new cycle, various prevention and control work need to be further implemented so as to prevent local cases caused by foreign imports.


          摘要:目的 分析达州市新型冠状病毒肺炎 (新冠肺炎) 病例流行病学特征, 为达州市新冠肺炎防控提供科学依 据。 方法 对 2020 年 1—2 月达州市报告的 42 例新冠肺炎病例资料进行统计分析。 结果 达州市 7 个县 (市、区) 均有 病例报告, 人群以 30~<50 岁为主, 无未成年人确诊病例报告; 发病高峰在 2020 年 1 月 26 日—2 月 5 日, 临床症状以发热 (59.52%) 和咳嗽 (64.29%) 为主, 早期 CT 检查肺部异常率 90.48%; 19 例输入性病例中 18 例有武汉旅居史或停留史; 患 者发病到住院、确诊到出院和持续排毒时间中位数分别为 5.5 d、18.5 d 和 7.0 d, 四分位数间距分别为 5.5 d、8.0 d 和 6.0 d。 结论 达州市 1 月份以输入性疫情为主, 2 月份本地病例不断增加, 2 月下旬疫情逐渐控制; 将发热、咳嗽作为新 冠肺炎临床筛查指征, CT 检查可作为早期筛查手段; 患者住院时间和持续排毒时间较长, 应做好长时间治疗准备及治 疗过程中心理疏导, 提高患者配合度; 达州市聚集性疫情程度较重, 基层工作有差距, 新周期需进一步落实各项防控工 作, 严防因境外输入引发本地病例。

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          Author and article information

          China Tropical Medicine
          China Tropical Medicine (China )
          01 November 2020
          01 November 2020
          : 20
          : 11
          : 1066-1068
          1Dazhou Municipal Center for Disease Control and Prevention, Dazhou, Sichuan 635002, China
          2Dazhou Central Hospital, Dazhou, Sichuan 635000, China
          3Center for Disease Control and Prevention of Dazhou City Tongchuan District, Dazhou, Sichuan 635000, China
          © 2020 Editorial Department of China Tropical Medicine

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License (CC BY-NC 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See

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