ArticleTropical medicine and infectious disease2025
Estimating Dengue Outbreak Thresholds in West Africa: A Comprehensive Analysis of Climatic Influences in Burkina Faso, 2018-2024.
Article in Tropical medicine and infectious disease, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Strengthening Arboviral Epidemic Response Through Entomological Surveillance: Insights from Bobo-Dioulasso, Burkina Faso.Current issues in molecular biology · 2026Article
- Dengue Fever and Its Burden in Burkina Faso: An Overview.Reviews in medical virology · 2026Review
- Article
- Building resilience against the growing threat of arboviruses: a scoping review of Aedes vector surveillance, control strategies and insecticide resistance in Africa.Parasites & vectors · 2025Article
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9 authors.
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Abstract
backgroundDengue, transmitted by METHODOLOGY: This retrospective ecological study utilized historical and contemporary data from Burkina Faso's Public Health Ministry (2018-2024) to model dengue outbreak thresholds. A combination of epidemic channel analysis, joinpoint regression, climate-disease relationship analysis, and negative binomial regression was employed to provide comprehensive insights into the factors driving dengue outbreaks. PRINCIPAL
findingsThe incidence of probable dengue cases remained stable, mostly below 5 cases per 100,000 people, except for a sharp surge in week 40 of 2023, peaking at 38 cases per 100,000. This surge was brief, normalizing by week 47, but coincided with a marked increase in mortality, reaching 90 deaths in week 45. Joinpoint regression identified key thresholds, an alert at 2.1 cases per 100,000 by week 41 and an intervention threshold at 19.1 cases by week 44, providing a framework for timely public health responses. Climatic factors significantly influenced dengue transmission, with higher temperatures (RR = 2.764) linked to increased incidence, while higher precipitation (RR = 0.551) was associated with lower case numbers, likely due to disrupted mosquito breeding conditions. Additionally, intermediate precipitation levels showed a complex relationship with higher incidence rates.
conclusionsThis study established evidence-based epidemiological thresholds for dengue outbreak detection in Burkina Faso (2018-2024), demonstrating temperature as a primary transmission driver while precipitation showed inverse relationships. Analysis of the 2023 outbreak identified a critical five-week intervention window (weeks 40-45), providing a framework for climate-sensitive early warning systems. These findings advance the understanding of dengue dynamics in West Africa, though future research should integrate geographical and socioeconomic variables to enhance predictive modeling and outbreak preparedness.
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