The global spread of dengue
A record 14 million dengue cases were reported in 2024 — double 2023 and twelve times 2014 — as mosquitoes spread with heat and cities.
How this affects people
Dengue is spread by Aedes mosquitoes that breed in standing water in and around homes.
Warmer temperatures, urbanisation and travel are expanding dengue into new regions, including parts of Europe and higher altitudes.
Look at what keeps the problem going
- 01Warming and heavier rain
- 02Rapid urbanisation and poor drainage
- 03Mosquito spread via travel and trade
What could happen next
The future leaves room for choices. Compare the outlooks, check what supports them and notice where the evidence becomes less certain
High transmission persists
Warm, wet seasons keep dengue at high levels in the Americas and Asia.
The future is not a timetable. These summaries reflect published scenarios and trends, with deeper uncertainty at longer horizons. Choices made now matter.
Where could a useful response begin?
Begin with a question you can investigate. Compare the sources and follow related briefings to see how the problem connects to other lives and places. This prototype does not accept proposals yet.
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