Optimization of control strategies for non-domiciliated Triatoma dimidiata, Chagas disease vector in the Yucatán Peninsula, Mexico.
BACKGROUND: Chagas disease is the most important vector-borne disease in Latin America. Regional initiatives based on residual insecticide spraying have successfully controlled domiciliated vectors in many regions. Non-domiciliated vectors remain responsible for a significant transmission risk, and...
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ftdoajarticles:oai:doaj.org/article:6c583c0bc20e4a469e0922bf1aafdd05 2023-05-15T15:13:36+02:00 Optimization of control strategies for non-domiciliated Triatoma dimidiata, Chagas disease vector in the Yucatán Peninsula, Mexico. Corentin Barbu Eric Dumonteil Sébastien Gourbière 2009-01-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0000416 https://doaj.org/article/6c583c0bc20e4a469e0922bf1aafdd05 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC2664331?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0000416 https://doaj.org/article/6c583c0bc20e4a469e0922bf1aafdd05 PLoS Neglected Tropical Diseases, Vol 3, Iss 4, p e416 (2009) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2009 ftdoajarticles https://doi.org/10.1371/journal.pntd.0000416 2022-12-30T21:58:51Z BACKGROUND: Chagas disease is the most important vector-borne disease in Latin America. Regional initiatives based on residual insecticide spraying have successfully controlled domiciliated vectors in many regions. Non-domiciliated vectors remain responsible for a significant transmission risk, and their control is now a key challenge for disease control. METHODOLOGY/PRINCIPAL FINDINGS: A mathematical model was developed to predict the temporal variations in abundance of non-domiciliated vectors inside houses. Demographic parameters were estimated by fitting the model to two years of field data from the Yucatan peninsula, Mexico. The predictive value of the model was tested on an independent data set before simulations examined the efficacy of control strategies based on residual insecticide spraying, insect screens, and bednets. The model accurately fitted and predicted field data in the absence and presence of insecticide spraying. Pyrethroid spraying was found effective when 50 mg/m(2) were applied yearly within a two-month period matching the immigration season. The >80% reduction in bug abundance was not improved by larger doses or more frequent interventions, and it decreased drastically for different timing and lower frequencies of intervention. Alternatively, the use of insect screens consistently reduced bug abundance proportionally to the reduction of the vector immigration rate. CONCLUSION/SIGNIFICANCE: Control of non-domiciliated vectors can hardly be achieved by insecticide spraying, because it would require yearly application and an accurate understanding of the temporal pattern of immigration. Insect screens appear to offer an effective and sustainable alternative, which may be part of multi-disease interventions for the integrated control of neglected vector-borne diseases. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic PLoS Neglected Tropical Diseases 3 4 e416 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
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Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
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Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Corentin Barbu Eric Dumonteil Sébastien Gourbière Optimization of control strategies for non-domiciliated Triatoma dimidiata, Chagas disease vector in the Yucatán Peninsula, Mexico. |
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Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
BACKGROUND: Chagas disease is the most important vector-borne disease in Latin America. Regional initiatives based on residual insecticide spraying have successfully controlled domiciliated vectors in many regions. Non-domiciliated vectors remain responsible for a significant transmission risk, and their control is now a key challenge for disease control. METHODOLOGY/PRINCIPAL FINDINGS: A mathematical model was developed to predict the temporal variations in abundance of non-domiciliated vectors inside houses. Demographic parameters were estimated by fitting the model to two years of field data from the Yucatan peninsula, Mexico. The predictive value of the model was tested on an independent data set before simulations examined the efficacy of control strategies based on residual insecticide spraying, insect screens, and bednets. The model accurately fitted and predicted field data in the absence and presence of insecticide spraying. Pyrethroid spraying was found effective when 50 mg/m(2) were applied yearly within a two-month period matching the immigration season. The >80% reduction in bug abundance was not improved by larger doses or more frequent interventions, and it decreased drastically for different timing and lower frequencies of intervention. Alternatively, the use of insect screens consistently reduced bug abundance proportionally to the reduction of the vector immigration rate. CONCLUSION/SIGNIFICANCE: Control of non-domiciliated vectors can hardly be achieved by insecticide spraying, because it would require yearly application and an accurate understanding of the temporal pattern of immigration. Insect screens appear to offer an effective and sustainable alternative, which may be part of multi-disease interventions for the integrated control of neglected vector-borne diseases. |
format |
Article in Journal/Newspaper |
author |
Corentin Barbu Eric Dumonteil Sébastien Gourbière |
author_facet |
Corentin Barbu Eric Dumonteil Sébastien Gourbière |
author_sort |
Corentin Barbu |
title |
Optimization of control strategies for non-domiciliated Triatoma dimidiata, Chagas disease vector in the Yucatán Peninsula, Mexico. |
title_short |
Optimization of control strategies for non-domiciliated Triatoma dimidiata, Chagas disease vector in the Yucatán Peninsula, Mexico. |
title_full |
Optimization of control strategies for non-domiciliated Triatoma dimidiata, Chagas disease vector in the Yucatán Peninsula, Mexico. |
title_fullStr |
Optimization of control strategies for non-domiciliated Triatoma dimidiata, Chagas disease vector in the Yucatán Peninsula, Mexico. |
title_full_unstemmed |
Optimization of control strategies for non-domiciliated Triatoma dimidiata, Chagas disease vector in the Yucatán Peninsula, Mexico. |
title_sort |
optimization of control strategies for non-domiciliated triatoma dimidiata, chagas disease vector in the yucatán peninsula, mexico. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2009 |
url |
https://doi.org/10.1371/journal.pntd.0000416 https://doaj.org/article/6c583c0bc20e4a469e0922bf1aafdd05 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 3, Iss 4, p e416 (2009) |
op_relation |
http://europepmc.org/articles/PMC2664331?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0000416 https://doaj.org/article/6c583c0bc20e4a469e0922bf1aafdd05 |
op_doi |
https://doi.org/10.1371/journal.pntd.0000416 |
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PLoS Neglected Tropical Diseases |
container_volume |
3 |
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4 |
container_start_page |
e416 |
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1766344128964067328 |