ArboRiskMap, a global risk surface for arbovirus transmission

ArboRiskMap is a model-based global atlas of where arboviral transmission is most likely to occur, integrating environmental, climatic, entomological and human-mobility predictors into a single high-resolution risk surface. The maps capture both current and projected risk, supporting decisions on where to invest in surveillance, vector control and outbreak preparedness.

For DeZi partners, ArboRiskMap is the predictive counterpart to the observational lenses already on this site: ArboTracker shows where dengue and Zika have been documented, Arbomap synthesises those data into measured force of infection, and ArboRiskMap projects forward, flagging where transmission is plausible even in the absence of confirmed cases. Together, the three layers show countries against a global backdrop of measured, modelled and projected arbovirus risk.

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DeZi countries mapped
La Réunion + French Polynesia within France
2.39 B
DCZ population at risk
42% of global DCZ risk
398 M
YF population at risk
26% of global YF risk
0.75
Mean surveillance score
vs 0.66 globally
Bubble size: DCZ population at risk
~5 M
~50 M
500 M+
Click a country for full stats

By country (sorted by DCZ population at risk)

Population values in millions · DCZ = Dengue + Chikungunya + Zika · All ranges shown as 95% credible intervals
View source data on GitHub →
Please cite Lim A, Shearer FM, Sewalk K, Pigott DM, Clarke J, Ghouse A, Judge C, Kang H, Messina JP, Kraemer MUG, Gaythorpe KAM, Souza WM, Nsoesie EO, Celone M, Faria N, Ryan SJ, Rabe IB, Rojas DP, Hay SI, Brownstein JS, Golding N, Brady OJ. The overlapping global distribution of dengue, chikungunya, Zika and yellow fever. Nat Commun 2025;16:3418. doi:10.1038/s41467-025-58609-5