Eco-bio-social determinants for house infestation by non-domiciliated Triatoma dimidiata in the Yucatan Peninsula, Mexico

Chagas disease is a vector-borne disease of major importance in the Americas. Disease prevention is mostly limited to vector control. Integrated interventions targeting ecological, biological and social determinants of vector-borne diseases are increasingly used for improved control. We investigated...

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Bibliographic Details
Published in:PLoS neglected tropical diseases 2013-09, Vol.7 (9), p.e2466-e2466
Main Authors: Dumonteil, Eric, Nouvellet, Pierre, Rosecrans, Kathryn, Ramirez-Sierra, Maria Jesus, Gamboa-León, Rubi, Cruz-Chan, Vladimir, Rosado-Vallado, Miguel, Gourbière, Sébastien
Format: Article
Language:English
Subjects:
Animals
Animals, Domestic
Biodiversity and Ecology
Chagas' disease
Disease
Disease transmission
Ecosystem
Environmental Sciences
Family Characteristics
Humans
Hypothesis testing
Insect Vectors
Insecticides
Methods
Mexico
Multivariate analysis
Poultry
Prevention
Residence Characteristics
Risk factors
Rural Population
Studies
Towns
Triatoma - growth & development
Triatoma dimidiata
Tropical diseases
Variables
Vector control
Vegetation
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Summary:Chagas disease is a vector-borne disease of major importance in the Americas. Disease prevention is mostly limited to vector control. Integrated interventions targeting ecological, biological and social determinants of vector-borne diseases are increasingly used for improved control. We investigated key factors associated with transient house infestation by T. dimidiata in rural villages in Yucatan, Mexico, using a mixed modeling approach based on initial null-hypothesis testing followed by multimodel inference and averaging on data from 308 houses from three villages. We found that the presence of dogs, chickens and potential refuges, such as rock piles, in the peridomicile as well as the proximity of houses to vegetation at the periphery of the village and to public light sources are major risk factors for infestation. These factors explain most of the intra-village variations in infestation. These results underline a process of infestation distinct from that of domiciliated triatomines and may be used for risk stratification of houses for both vector surveillance and control. Combined integrated vector interventions, informed by an Ecohealth perspective, should aim at targeting several of these factors to effectively reduce infestation and provide sustainable vector control.
ISSN:1935-2735
1935-2727
1935-2735
DOI:10.1371/journal.pntd.0002466