吴朝学, 涂文校, 赵坚, 郭立春, 马飞飞, 杜道法, 郭慧芬, 田志华. 利比里亚埃博拉病毒病流行特征分析中国疾病预防控制中心埃博拉应急响应监测与信息组[J]. 疾病监测, 2015, 30(10): 886-890. DOI: 10.3784/j.issn.1003-9961.2015.10.022
引用本文: 吴朝学, 涂文校, 赵坚, 郭立春, 马飞飞, 杜道法, 郭慧芬, 田志华. 利比里亚埃博拉病毒病流行特征分析中国疾病预防控制中心埃博拉应急响应监测与信息组[J]. 疾病监测, 2015, 30(10): 886-890. DOI: 10.3784/j.issn.1003-9961.2015.10.022
WU Chao-xue, TU Wen-xiao, ZHAO Jian, GUO Li-chun, MA Fei-fei, DU Dao-fa, GUO Hui-fen, TIAN Zhi-hua. Epidemiologic characteristics of Ebola virus disease outbreak in Liberia[J]. Disease Surveillance, 2015, 30(10): 886-890. DOI: 10.3784/j.issn.1003-9961.2015.10.022
Citation: WU Chao-xue, TU Wen-xiao, ZHAO Jian, GUO Li-chun, MA Fei-fei, DU Dao-fa, GUO Hui-fen, TIAN Zhi-hua. Epidemiologic characteristics of Ebola virus disease outbreak in Liberia[J]. Disease Surveillance, 2015, 30(10): 886-890. DOI: 10.3784/j.issn.1003-9961.2015.10.022

利比里亚埃博拉病毒病流行特征分析中国疾病预防控制中心埃博拉应急响应监测与信息组

Epidemiologic characteristics of Ebola virus disease outbreak in Liberia

  • 摘要: 西非利比里亚埃博拉病毒病疫情流行特征及防控模式进行综述,为我国援助西非3国提供依据;数据来源于利比里亚卫生部、世界卫生组织态势周报、欧盟疾病预防控制中心等官网,采用描述流行病学方法进行流行特征描述;截至2015年3月15日,利比里亚累计报告病例9645例,报告死亡4252例,病死率为44%,其中医务人员累计报告病例数372例,死亡180例,医务人员感染病例数占西非3国医务人员感染病例数的39%,占该国全部感染病例数的3.9%,医务人员病死率为48%;男女发病差异无统计学意义,人群普遍易感,以45岁以上年龄组高发,是15岁以下年龄组的3倍;病例密切接触追踪比为100%。利比里亚疫情自2014年3月下旬至4月23日,表现出暂时控制现象,6月中旬出现第二波疫情,且报告病例数呈指数性上升,9月该国疫情达到暴发高峰后,开始出现明显下降趋势,截至2015年3月15日,利比里亚疫情处于零发状态,疫情趋于控制。利比里亚疫情暴发原因为经济水平落后、文化习俗、防控资源不足、早期防控措施落实不到位等。该国疫情应对经验对我国今后新发和输入性传染病防控有重要的借鉴意义。

     

    Abstract: Objective To analyze the epidemiologic characteristics of Ebola virus disease(EVD) outbreak in Liberia, evaluate related prevention and control effort, and provide evidence for China's anti EVD aid in West Africa.Methods The incidence data of EVD was collected from the web sites of Liberian ministry of health, WHO and European Centre for Disease Prevention and Control; and a descriptive epidemiologic analysis was conducted.Results As of 15 March, 2015, a total of 9645 EVD cases had been reported in Liberia, including 4252 deaths, the case fatality rate was 44%. Among health care workers(HCWs), 372 cases, including 180 deaths, were reported, accounting for 39% of HCWs infected with Ebola virus in three West African countries(Liberia, Guinea and Sierra Leone) and 3.9% of total EVD cases in Liberia. The case fatality rate in HCWs was 48%. The gender specific difference in EVD incidence had no statistical significance. The population was generally susceptible and the EVD incidence in people aged 45 years was 3 times higher than that in people aged 15 years; All the close contacts of EVD cases were tracked. From late March to April 23, 2014, the EVD epidemic was temporarily controlled, but in mid-June, the second wave of EVD epidemic occurred, the case number increased exponentially and peaked in September, then declined significantly from mid-September to mid-December, the incidence of EVD was low, the epidemic tended to be controlled. On 15 March 2015, no case was reported any more.Conclusion The failure in control of EVD epidemic in Liberia might be explained by the fall behind economy, traditional custom, limited prevention and control resources and poor implementation of early prevention and control measures. The lessons learnt from Liberia's EVD prevention and control practice are important for the prevention and control of emerging and imported communicable diseases in China in the future.

     

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