六安市69例新型冠状病毒肺炎病例的流行病学特征

  目的  探究六安市COVID-19病例的流行特征，为该地COVID-19疫情防控提供科学依据。  方法  选取截至2020年2月18日24时传染病报告系统中六安市所有COVID-19确诊病例，收集一般人口学特征、病例发病和就诊信息、流行病学特征等资料描述病例特征，采用SaTScan 9.6.0.0软件分析疾病传播的时空分布特征，应用Excel 2010软件绘制流行曲线。  结果  六安截至2020年2月18日共报告确诊病例69例，男性(44例)多于女性(25例)，年龄集中在36~45岁(37.68%)，工人最多(24.64%)。首发症状以发热(50例，72.46%)、咳嗽(25例，36.23%)和乏力(12例，17.40%)为主。全市以金寨县(23例)、霍山县(17例)和霍邱县(13例)疫情最严重。发病数于1月25~28日出现首个流行峰，1月27日出现单日最高，后呈下降趋势。共发生45例聚集性病例。  结论  六安市COVID-19疫情总体可防可控，后期需警惕家庭聚集性和无症状感染者以及输入性病例传播的风险，做好密切接触者的排查工作。

Epidemic characteristics of 69 COVID-19 cases in Lu'an City

  Objective  To explore the epidemic characteristics of COVID-19 in Lu'an city, so as to provide scientific basis for the prevention and control of COVID-19 in this area.  Methods  All the confirmed cases of COVID-19 were selected from the Infectious Disease Reporting System from the onset of disease to 24:00 on February 18th, 2020 in Lu'an City. The general demographic, onset and medical information, and epidemiological characteristics of confirmed cases were collected to describe the feature of patients. The spatial and temporal distribution of disease transmission was analyzed by SaTScan 9.6.0.0 software, and Excel 2010 software was used to draw the epidemic curves of all cases.  Results  A total of 69 confirmed cases were reported in Lu'an City by February 18th, 2020. There were more male cases (44) than female (25), and cases mainly aged 36-45 years old (37.68%). The proportion of workers was the highest (24.64%). The first symptom of conformed cases was fever (50, 72.46%), cough (25, 36.23%) and fatigue (12, 17.40%). The epidemic was more serious in Jinzhai County (23), Huoshan County (17) and Huoqiu County (13). The number of cases in Lu'an showed that the first epidemic peak occurred between January 25th and January 28th, and the largest number of cases occurred on January 27th, then showed a downward trend. A total of 45 aggregate cases were found.  Conclusion  The COVID-19 epidemic in Lu'an City is generally preventable and controllable. It will be alert to the risk of family clustering, spread of asymptomatic infections and imported cases. Future work should focus on the investigation of close contacts.