Dengue occurences

Data Layer information
Source file is available (Show file)
Data is available locally
Data is loaded into the database
Operation
Database unit
Value type integer
Temporal resolution year
Data availability per spatial unit within the integrated time period
Shape type First Last Availability
Country 20.00 %
Region 1.25 %
District 0.08 %
Total 2001 2010 0.22 %

Analytical overview


Source information

[1 of 2] Global dengue occurrence database

Georeferenced dengue fever occurrence records from 1927-2024, compiled from surveillance data, outbreak reports, and scientific literature. Includes 5,867 unique locations across 118 countries after spatial processing, used for global environmental suitability modeling. Disease occurrence data has been derived from previous publications on dengue, chikungunya, Zika, and yellow fever, as stated in the publication. Additional data was extracted from publicly available sources, including WHO regional outbreak updates (https://www.who.int/emergencies/disease-outbreak-news); ECDC website (https://www.ecdc.europa.eu/en/); and ProMED mail reports (http://www.promedmail.org) and the HealthMap platform (www.healthmap.org).

Citation

This source is included in the Data Layer citation.

[2 of 2] The overlapping global distribution of dengue, chikungunya, Zika, and yellow fever
Information
DOIhttps://doi.org/10.1038/s41467-025-58609-5

Arboviruses transmitted mainly by Aedes (Stegomyia) aegypti and Ae. albopictus, including dengue, chikungunya, and Zika viruses, and yellow fever virus in urban settings, pose an escalating global threat. Existing risk maps, often hampered by surveillance biases, may underestimate or misrepresent the true distribution of these diseases and do not incorporate epidemiological similarities despite shared vector species. We address this by generating new global environmental suitability maps for Aedes-borne arboviruses using a multi-disease ecological niche model with a nested surveillance model fit to a dataset of over 21,000 occurrence points. This reveals a convergence in suitability around a common global distribution with recent spread of chikungunya and Zika closely aligning with areas suitable for dengue. We estimate that 5.66 (95% confidence interval 5.64-5.68) billion people live in areas suitable for dengue, chikungunya and Zika and 1.54 (1.53-1.54) billion people for yellow fever. We find large national and subnational differences in surveillance capabilities with higher income more accessible areas more likely to detect, diagnose and report viral diseases, which may have led to overestimation of risk in the United States and Europe. When combined with estimates of uncertainty, these suitability maps can be used by ministries of health to target limited surveillance and intervention resources in new strategies against these emerging threats.

Citation

This source is included in the Data Layer citation.