Ching-En Jason Chou , Yi-Hsuan Lee , Wen-Ching Lin , Shao-Yi Cheng , Kuo-Chin Huang , Chia-Wen Lu
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Ten-year trend and geographic analysis of the incidence of dengue in Taiwan
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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