Epidemiological and cluster characteristics of dengue fever in Yunnan Province, Southwestern China, 2013–2023
Abstract Background Yunnan Province, located in the southwestern part of China and neighboring endemic dengue regions of Southeast Asia, has experienced annual autochthonous outbreaks of dengue fever from 2013 to 2023. This study examines the epidemiological and spatiotemporal clustering characteris...
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BMC
2025-01-01
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| Series: | BMC Infectious Diseases |
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| Online Access: | https://doi.org/10.1186/s12879-024-10403-2 |
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| author | Shu-Zhen Deng Xiao-Yu Liu Jian-Juan Su Ling-hui Xiang Li-Tao Chang Jun-Jie Zhu Hai-Lin Zhang |
| author_facet | Shu-Zhen Deng Xiao-Yu Liu Jian-Juan Su Ling-hui Xiang Li-Tao Chang Jun-Jie Zhu Hai-Lin Zhang |
| author_sort | Shu-Zhen Deng |
| collection | DOAJ |
| description | Abstract Background Yunnan Province, located in the southwestern part of China and neighboring endemic dengue regions of Southeast Asia, has experienced annual autochthonous outbreaks of dengue fever from 2013 to 2023. This study examines the epidemiological and spatiotemporal clustering characteristics of dengue within the province. Methods Descriptive epidemiological methods were used to analyse outbreak characteristics. Excel 2019 and ArcGIS 10.3 software were used to establish a case database and for mapping. Spatial autocorrelation and spatio-temporal clustering analysis were employed to study the features of spatial clustering. Results From 2013 to 2023, 30,666 dengue cases were reported in Yunnan Province, of which 22,806 (74.37%) were indigenous and 7,860 (25.63%) were imported. Imported cases from Myanmar, Laos, and Vietnam were reported each year, with indigenous outbreaks occurring from June to December. The majority of cases occurred among young adults, mainly farmers, service workers, homemakers, and the unemployed. There was a significant temporal and spatial clustering of dengue incidence, with intense local clustering in the southwestern border areas of the province from July to November, particularly in Xishuangbanna, Dehong, Lincang, Pu’er, and Honghe prefectures. Conclusion Autochthonous outbreaks of dengue fever in Yunnan Province occurred predominantly in the border areas adjacent to Myanmar, Laos, and Vietnam. The largest outbreak in the province’s history occurred in 2023, related to the increase in imported cases following the reopening of borders after the COVID-19 pandemic. Dengue fever is considered primarily an imported disease in Yunnan, emphasizing the need for enhanced control of cross-border transmission and mosquito vector management. |
| format | Article |
| id | doaj-art-09ff082dfb5147bebd7076ae329de588 |
| institution | Kabale University |
| issn | 1471-2334 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Infectious Diseases |
| spelling | doaj-art-09ff082dfb5147bebd7076ae329de5882025-01-26T12:17:04ZengBMCBMC Infectious Diseases1471-23342025-01-0125111010.1186/s12879-024-10403-2Epidemiological and cluster characteristics of dengue fever in Yunnan Province, Southwestern China, 2013–2023Shu-Zhen Deng0Xiao-Yu Liu1Jian-Juan Su2Ling-hui Xiang3Li-Tao Chang4Jun-Jie Zhu5Hai-Lin Zhang6Department of School Health, Yunnan Center for Disease Control and PreventionDepartment of Epidemiology and Health Statistic, School of Public Health, Dali UniversityDepartment of Epidemiology and Health Statistic, School of Public Health, Dali UniversityDepartment of Epidemiology and Health Statistic, Xiangya School of Public Health, Central South UniversityDepartment of School Health, Yunnan Center for Disease Control and PreventionDepartment of Epidemiology and Health Statistic, School of Public Health, Dali UniversityYunnan Institute of Endemic Diseases Control and Prevention, Yunnan Provincial Key Laboratory for Zoonosis Control and PreventionAbstract Background Yunnan Province, located in the southwestern part of China and neighboring endemic dengue regions of Southeast Asia, has experienced annual autochthonous outbreaks of dengue fever from 2013 to 2023. This study examines the epidemiological and spatiotemporal clustering characteristics of dengue within the province. Methods Descriptive epidemiological methods were used to analyse outbreak characteristics. Excel 2019 and ArcGIS 10.3 software were used to establish a case database and for mapping. Spatial autocorrelation and spatio-temporal clustering analysis were employed to study the features of spatial clustering. Results From 2013 to 2023, 30,666 dengue cases were reported in Yunnan Province, of which 22,806 (74.37%) were indigenous and 7,860 (25.63%) were imported. Imported cases from Myanmar, Laos, and Vietnam were reported each year, with indigenous outbreaks occurring from June to December. The majority of cases occurred among young adults, mainly farmers, service workers, homemakers, and the unemployed. There was a significant temporal and spatial clustering of dengue incidence, with intense local clustering in the southwestern border areas of the province from July to November, particularly in Xishuangbanna, Dehong, Lincang, Pu’er, and Honghe prefectures. Conclusion Autochthonous outbreaks of dengue fever in Yunnan Province occurred predominantly in the border areas adjacent to Myanmar, Laos, and Vietnam. The largest outbreak in the province’s history occurred in 2023, related to the increase in imported cases following the reopening of borders after the COVID-19 pandemic. Dengue fever is considered primarily an imported disease in Yunnan, emphasizing the need for enhanced control of cross-border transmission and mosquito vector management.https://doi.org/10.1186/s12879-024-10403-2Dengue feverEpidemiological characteristicsCross-border spreadAutochthonous outbreak |
| spellingShingle | Shu-Zhen Deng Xiao-Yu Liu Jian-Juan Su Ling-hui Xiang Li-Tao Chang Jun-Jie Zhu Hai-Lin Zhang Epidemiological and cluster characteristics of dengue fever in Yunnan Province, Southwestern China, 2013–2023 BMC Infectious Diseases Dengue fever Epidemiological characteristics Cross-border spread Autochthonous outbreak |
| title | Epidemiological and cluster characteristics of dengue fever in Yunnan Province, Southwestern China, 2013–2023 |
| title_full | Epidemiological and cluster characteristics of dengue fever in Yunnan Province, Southwestern China, 2013–2023 |
| title_fullStr | Epidemiological and cluster characteristics of dengue fever in Yunnan Province, Southwestern China, 2013–2023 |
| title_full_unstemmed | Epidemiological and cluster characteristics of dengue fever in Yunnan Province, Southwestern China, 2013–2023 |
| title_short | Epidemiological and cluster characteristics of dengue fever in Yunnan Province, Southwestern China, 2013–2023 |
| title_sort | epidemiological and cluster characteristics of dengue fever in yunnan province southwestern china 2013 2023 |
| topic | Dengue fever Epidemiological characteristics Cross-border spread Autochthonous outbreak |
| url | https://doi.org/10.1186/s12879-024-10403-2 |
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