中国媒介生物学及控制杂志 ›› 2024, Vol. 35 ›› Issue (1): 63-68.DOI: 10.11853/j.issn.1003.8280.2024.01.011

• 媒介生物传染病 • 上一篇    下一篇

云南省2013-2022年登革热流行趋势及暴发疫情特征分析

陈莉华1, 念鹏英2, 沈秀莲1, 郑尔达1, 段江丽3   

  1. 1. 云南省疾病预防控制中心疫情监测/突发公共卫生事件处置中心, 云南 昆明 650022;
    2. 玉溪市江川区疾病预防控制中心疾病控制科, 云南 玉溪 653100;
    3. 大理白族自治州疾病预防控制中心质量管理室, 云南 大理 671000
  • 收稿日期:2023-07-18 出版日期:2024-02-20 发布日期:2024-03-05
  • 通讯作者: 段江丽,E-mail:112762978@qq.com
  • 作者简介:陈莉华,女,硕士,主管医师,主要从事传染病疫情及突发公共卫生事件监测与防控工作,E-mail:312728767@qq.com; 念鹏英,女,主管医师,主要从事传染病防控工作,E-mail:997260013@qq.com
  • 基金资助:
    2021年度教育部哲学社会科学研究重大课题攻关项目(21JZD039)

Epidemiological trends and outbreak characteristics of dengue fever in Yunnan Province, China, 2013-2022

CHEN Li-hua1, NIAN Peng-ying2, SHEN Xiu-lian1, ZHENG Er-da1, DUAN Jiang-li3   

  1. 1. Epidemic Monitoring/Emergency Public Health Response Center, Yunnan Center for Disease Prevention and Control, Kunming, Yunnan 650022, China;
    2. Department for Disease Control, Jiangchuan Center for Disease Control and Prevention of Yuxi, Yuxi, Yunnan 653100, China;
    3. Quality Control Office, Dali Prefectural Center for Disease Control and Prevention, Dali, Yunnan 671000, China
  • Received:2023-07-18 Online:2024-02-20 Published:2024-03-05
  • Supported by:
    Ministry of Education's 2021 Project on Philosophy and Social Sciences (No. 21JZD039)

摘要: 目的 分析云南省登革热流行特征系统及暴发疫情情况,为制定有效防控措施提供科学依据。方法 从“中国疾病预防控制信息系统”的“传染病监测”和“突发公共卫生事件管理信息系统”模块收集2013-2022年云南省报告的登革热病例及暴发疫情相关信息,采用集中度法分析季节性,使用Excel 2007软件进行数据整理,MapInfo 7.8软件绘制地图,采用SPSS 26.0统计软件进行相关性分析,率或构成比的比较采用χ2检验,采用描述流行病学方法对登革热流行特征及暴发疫情处置情况进行分析。结果 2013-2022年云南省共报告登革热病例16 774例,其中本地病例11 944例,境外输入病例4 521例,境内输入病例309例,年均报告发病率为3.53/10万。发病呈现隔年高发的现象,发病集中度(M)为0.84,具有很强的季节性。输入病例主要发生在6-10月,本地病例以8-11月为主。输入病例中男女性别比略高于本地病例(χ2=37.596,P<0.001)。本地病例以30~<40岁人群为主(20.14%),输入病例以20~<30岁人群最多(27.58%)。本地病例出现在边境5个州(市),输入病例中境外主要来源于东南亚和非洲国家,缅甸、柬埔寨和老挝是主要来源国(96.81%),境内以西双版纳傣族自治州为主(85.76%)。病例职业主要为农民、商业服务、干部/离退人员、家务及待业和学生,本地病例中以商业服务者构成比最高(21.89%),输入病例中以农民构成比最高(39.90%),输入病例与本地病例的职业分布差异有统计学意义(χ2=1 535.415,P<0.001)。2013-2022年共报告登革热暴发疫情28起,其中较大事件1起,一般事件27起,报告病例数占总病例数的83.41%,每起事件平均涉及病例499.71例;首发病例发病到核实事件发生中位时间为7(5,9) d,暴发疫情持续时间中位数为110(27,140) d;25起暴发事件发生在村(社区)。结论 云南省登革热存在明显季节、人群以及地区分布规律,应进一步加强输入病例管控、媒介监测控制以及重点地区的防控工作。

关键词: 登革热, 流行特征, 暴发, 本地病例, 输入病例

Abstract: Objective To analyze epidemiological characteristics and outbreak of dengue fever in Yunnan Province, China, so as to provide a scientific basis for formulating effective prevention and control measures. Methods Relevant data on dengue fever cases and outbreaks reported in Yunnan Province during 2013-2022 were collected from the “Infectious Disease Surveillance System” and “Public Health Emergency Management Information System” of “China Disease Control and Prevention Information System”. The concentration method was used to analyze seasonal characteristics. Excel 2007 software was used to sort out the data. MapInfo 7.8 software was used to draw the map. SPSS 26.0 was used to analyze the correlation, and the Chi-square test was used to compare the rate or composition ratio. The descriptive epidemiological method was used to analyze the epidemiological characteristics and outbreak response to dengue fever. Results A total of 16 774 cases of dengue fever were reported in Yunnan Province from 2013 to 2022, including 11 944 local cases, 4 521 overseas imported cases, and 309 domestic imported cases, with an average annual reported incidence of 3.53/100 000. The disease showed a high incidence every other year. The concentration (M) was 0.84, showing strong seasonality. Imported cases mainly occurred from June to October, and local cases mostly from August to November. The male-to-female ratio of imported cases was slightly higher than that of local cases (χ2=37.596, P<0.001). The majority of local cases were 30~<40 years old (20.14%), and the majority of imported cases were 20~<30 years old (27.58%). The local cases were found in 5 border prefectures (cities). The overseas imported cases were mainly from southeast Asian countries and African countries, and Myanmar, Cambodia, and Laos were the main source countries (96.81%). The domestic imported cases were mainly from Xishuangbanna Dai Autonomous Prefecture (85.76%). The majority of cases were farmers, commercial service personnel, cadres/retirees, housekeepers, job-waiting people, and students. Commercial service personnel accounted for the highest proportion in local cases (21.89%), while farmers accounted for the highest proportion in imported cases (39.90%). There was a significant difference in occupational distribution between imported cases and local cases (χ2=1 535.415, P<0.001). A total of 28 dengue fever outbreaks were reported from 2013 to 2022, including 1 major event and 27 general events. The number of reported cases accounted for 83.41% of the total number of cases, and each event involved an average of 499.71 cases. The median time from the onset of the first case to the verification of event occurrence was 7 (5, 9) days, and the median duration of the outbreak was 110 (27, 140) days. Twenty-five outbreaks occurred in villages/communities. Conclusions Dengue fever in Yunnan has obvious seasonal, aggregated, and regional distribution patterns. We need to further strengthen imported case management, disease vector surveillance and control, and the prevention and control of dengue fever in key areas.

Key words: Dengue fever, Epidemiological characteristic, Outbreak, Local case, Imported case

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