Ten-year trend and geographic analysis of the incidence of dengue in Taiwan

IF 1.7 Q4 INFECTIOUS DISEASES

IJID regions Pub Date : 2025-09-10 DOI:10.1016/j.ijregi.2025.100754

Ching-En Jason Chou , Yi-Hsuan Lee , Wen-Ching Lin , Shao-Yi Cheng , Kuo-Chin Huang , Chia-Wen Lu

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Abstract

Objectives

To examine a decade of dengue data in Taiwan, focusing on high-risk groups, the influence of imported cases on local outbreaks, and the role of the climate in disease spread.

Methods

A descriptive study was carried out utilizing the statistical databases of the Taiwan Centers for Disease Control. The incidence of dengue was analyzed by age, sex, and administrative area. Chi-square tests and t-tests were employed to test differences across subgroups. Geographic information system was used to compare the spatial distribution of dengue incidence.

Results

The highest incidence was observed in individuals aged ≥70 years. Comparison of the 2015 and 2023 outbreaks showed a significant surge in dengue incidence in Yunlin County, the first county north of the Tropic of Cancer. Furthermore, no indigenous cases were observed in 2021, the year marked with the longest period of COVID-19 border control in Taiwan.

Conclusions

Taiwan should target older age groups and enhance the border control to mitigate dengue outbreaks. Subtropical areas should learn from experienced regions and implement strict preventive strategies against climate change.

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台湾登革热发病率十年趋势及地理分析

目的分析台湾地区近10年登革热发病资料，重点关注高危人群、输入性病例对当地疫情的影响以及气候在疾病传播中的作用。方法利用台湾省疾病预防控制中心统计数据库进行描述性研究。按年龄、性别和行政区域分析登革热的发病率。采用卡方检验和t检验检验亚组间差异。利用地理信息系统比较登革热发病的空间分布。结果以≥70岁人群发病率最高。2015年和2023年疫情的比较显示，北回归线以北的第一个县云林县登革热发病率显著上升。此外，2021年没有发现本土病例，这一年是台湾实施2019冠状病毒病边境管制时间最长的一年。结论台湾应以老年人群为目标，加强边境管控，减少登革热疫情。亚热带地区应向经验丰富的地区学习，实施严格的气候变化预防策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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