ArticlePLoS neglected tropical diseases2025
Aedes aegypti ecology and dengue infection in three agricultural areas of Côte d'Ivoire.
Article in PLoS neglected tropical diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- First laboratory-confirmed fatal dengue virus infection and its implications for national arboviral surveillance in Liberia.IJID regions · 2026Article
- Rural dengue dynamics: the interplay of climate, built environment, and agriculture in Costa Rica.medRxiv : the preprint server for health sciences · 2026Article
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12 authors.
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Abstract
backgroundOver the last ten years, there has been an upsurge of dengue outbreaks in Côte d'Ivoire, with Aedes aegypti as the principal vector. The intensification of farming activities and the living conditions of local populations could lead to a proliferation of artificial breeding sites for Ae. aegypti, which would increase the risk of dengue transmission in rural areas. The present study characterised the habitats of Ae. aegypti larvae and assessed the risk of dengue transmission in three key agricultural areas of Côte d'Ivoire. METHODOLOGY: Aedes aegypti (larvae, pupae and adults) were collected from human dwellings in three key agricultural areas of Côte d'Ivoire during the rainy season. Risk indices including traditional Stegomyia indices and pupal indices were estimated. RT-qPCR was used to detect DENV in the pools of Ae. aegypti. PRINCIPAL
findingsAedes aegypti was the predominant species collected at the three locations. The predominant breeding sites were discarded tanks in Songon-Agban and Tchanctévè, and water storage tanks in Kaforo. High Stegomyia indices (house indices >5% and/or Breteau indices >20) and pupal indices (PIH [0.8 - 2.2] and PIP [0.1 - 0.4]) were recorded in all three sites, suggesting a high risk of dengue transmission. DENV-3 was detected in 1/96 (3.6%) pools of Ae. aegypti collected as immature stages in Songon-Agban with a minimum infection rate (MIR) of 1.9 per 1000 mosquitoes. CONCLUSIONS/SIGNIFICANCE: The findings of this study indicated a high entomological risk of dengue across the three agricultural sites. It is important that the potential for transovarial transmission of DENV-3 in Ae. aegypti is considered when formulating control strategies against this vector in Côte d'Ivoire.
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