Extreme weather events and dengue in Southeast Asia: A regionally-representative analysis of 291 locations from 1998 to 2021

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Analysis shows heatwaves and drought increase dengue risk in Southeast Asia, highlighting urgent need for mitigation efforts.

Months with fewer than 12 heatwave days increased dengue risk with a delayed effect after two months.
Drought conditions showed a positive association with dengue risk, indicating a risk ratio of 1.85.
Extreme wet conditions were associated with a reduced dengue risk, with a risk ratio of 0.89.
Inconsistencies in dengue reporting complicate accurate risk estimation, emphasizing the need for better data systems.

Ith et al. (2025) studied this question.

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