Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation

Autores
Gorla, David Eladio; Vargas Ortiz, Roberto; Catala, Silvia Susana
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background: Triatoma infestans, the main vector of Trypanosoma cruzi (causative agent of Chagas disease) has been successfully eliminated over much of its original geographic distribution over the southern cone countries of South America. However, populations of the species are still infesting houses of rural communities of the Gran Chaco region of Argentina and Bolivia. This study reports for the first time a large-scale effect of a vector control intervention using a microencapsulated formulation of organophosphates and insect growth regulator on house infestation by T. infestans, in the southwestern region of Santa Cruz de la Sierra Department, within the Bolivian chaco. Methods: The vector control intervention included the treatment and entomological evaluation of 1626 individually coded and georeferenced houses with the microencapsulated formulation. House infestation by T. infestans was evaluated by active searches with fixed capture effort carried out before and after two, 16 and 32 months of the treatment application. Results: House infestation prevalence was 30.5% before the intervention, spatially aggregated in two clusters of 38 and 25 localities that showed 41% and 38% house infestation by T. infestans. Infestation prevalence was reduced to 2.4% two months after the intervention and remained very low (1.7%) until the end of the study after 32 months of the control intervention, without any other additional vector control intervention. Conclusions: The obtained results show an important long lasting effect on house protection against triatomine infestation in a region of known pyrethroid resistant populations of T. infestans, as the result of the slow release of the active ingredients, protected by the formulation microcapsule.
Fil: Gorla, David Eladio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina
Fil: Vargas Ortiz, Roberto. Servicio Departamental de Salud. Programa Chagas; Argentina
Fil: Catala, Silvia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina
Materia
Chagas disease
Triatoma infestans
Vector control
Chaco region
Microencapsulated formulation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/12111
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/12111
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulationGorla, David EladioVargas Ortiz, RobertoCatala, Silvia SusanaChagas diseaseTriatoma infestansVector controlChaco regionMicroencapsulated formulationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Background: Triatoma infestans, the main vector of Trypanosoma cruzi (causative agent of Chagas disease) has been successfully eliminated over much of its original geographic distribution over the southern cone countries of South America. However, populations of the species are still infesting houses of rural communities of the Gran Chaco region of Argentina and Bolivia. This study reports for the first time a large-scale effect of a vector control intervention using a microencapsulated formulation of organophosphates and insect growth regulator on house infestation by T. infestans, in the southwestern region of Santa Cruz de la Sierra Department, within the Bolivian chaco. Methods: The vector control intervention included the treatment and entomological evaluation of 1626 individually coded and georeferenced houses with the microencapsulated formulation. House infestation by T. infestans was evaluated by active searches with fixed capture effort carried out before and after two, 16 and 32 months of the treatment application. Results: House infestation prevalence was 30.5% before the intervention, spatially aggregated in two clusters of 38 and 25 localities that showed 41% and 38% house infestation by T. infestans. Infestation prevalence was reduced to 2.4% two months after the intervention and remained very low (1.7%) until the end of the study after 32 months of the control intervention, without any other additional vector control intervention. Conclusions: The obtained results show an important long lasting effect on house protection against triatomine infestation in a region of known pyrethroid resistant populations of T. infestans, as the result of the slow release of the active ingredients, protected by the formulation microcapsule.Fil: Gorla, David Eladio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; ArgentinaFil: Vargas Ortiz, Roberto. Servicio Departamental de Salud. Programa Chagas; ArgentinaFil: Catala, Silvia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; ArgentinaBioMed Central2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12111Gorla, David Eladio; Vargas Ortiz, Roberto; Catala, Silvia Susana; Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation; BioMed Central; Parasites and Vectors; 8; 255; 4-2015; 81756-3305enginfo:eu-repo/semantics/altIdentifier/url/http://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-015-0762-0info:eu-repo/semantics/altIdentifier/doi/10.1186/s13071-015-0762-0info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:08:21Zoai:ri.conicet.gov.ar:11336/12111instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:08:21.511CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation
title Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation
spellingShingle Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation
Gorla, David Eladio
Chagas disease
Triatoma infestans
Vector control
Chaco region
Microencapsulated formulation
title_short Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation
title_full Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation
title_fullStr Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation
title_full_unstemmed Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation
title_sort Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation
dc.creator.none.fl_str_mv Gorla, David Eladio
Vargas Ortiz, Roberto
Catala, Silvia Susana
author Gorla, David Eladio
author_facet Gorla, David Eladio
Vargas Ortiz, Roberto
Catala, Silvia Susana
author_role author
author2 Vargas Ortiz, Roberto
Catala, Silvia Susana
author2_role author
author
dc.subject.none.fl_str_mv Chagas disease
Triatoma infestans
Vector control
Chaco region
Microencapsulated formulation
topic Chagas disease
Triatoma infestans
Vector control
Chaco region
Microencapsulated formulation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Background: Triatoma infestans, the main vector of Trypanosoma cruzi (causative agent of Chagas disease) has been successfully eliminated over much of its original geographic distribution over the southern cone countries of South America. However, populations of the species are still infesting houses of rural communities of the Gran Chaco region of Argentina and Bolivia. This study reports for the first time a large-scale effect of a vector control intervention using a microencapsulated formulation of organophosphates and insect growth regulator on house infestation by T. infestans, in the southwestern region of Santa Cruz de la Sierra Department, within the Bolivian chaco. Methods: The vector control intervention included the treatment and entomological evaluation of 1626 individually coded and georeferenced houses with the microencapsulated formulation. House infestation by T. infestans was evaluated by active searches with fixed capture effort carried out before and after two, 16 and 32 months of the treatment application. Results: House infestation prevalence was 30.5% before the intervention, spatially aggregated in two clusters of 38 and 25 localities that showed 41% and 38% house infestation by T. infestans. Infestation prevalence was reduced to 2.4% two months after the intervention and remained very low (1.7%) until the end of the study after 32 months of the control intervention, without any other additional vector control intervention. Conclusions: The obtained results show an important long lasting effect on house protection against triatomine infestation in a region of known pyrethroid resistant populations of T. infestans, as the result of the slow release of the active ingredients, protected by the formulation microcapsule.
Fil: Gorla, David Eladio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina
Fil: Vargas Ortiz, Roberto. Servicio Departamental de Salud. Programa Chagas; Argentina
Fil: Catala, Silvia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina
description Background: Triatoma infestans, the main vector of Trypanosoma cruzi (causative agent of Chagas disease) has been successfully eliminated over much of its original geographic distribution over the southern cone countries of South America. However, populations of the species are still infesting houses of rural communities of the Gran Chaco region of Argentina and Bolivia. This study reports for the first time a large-scale effect of a vector control intervention using a microencapsulated formulation of organophosphates and insect growth regulator on house infestation by T. infestans, in the southwestern region of Santa Cruz de la Sierra Department, within the Bolivian chaco. Methods: The vector control intervention included the treatment and entomological evaluation of 1626 individually coded and georeferenced houses with the microencapsulated formulation. House infestation by T. infestans was evaluated by active searches with fixed capture effort carried out before and after two, 16 and 32 months of the treatment application. Results: House infestation prevalence was 30.5% before the intervention, spatially aggregated in two clusters of 38 and 25 localities that showed 41% and 38% house infestation by T. infestans. Infestation prevalence was reduced to 2.4% two months after the intervention and remained very low (1.7%) until the end of the study after 32 months of the control intervention, without any other additional vector control intervention. Conclusions: The obtained results show an important long lasting effect on house protection against triatomine infestation in a region of known pyrethroid resistant populations of T. infestans, as the result of the slow release of the active ingredients, protected by the formulation microcapsule.
publishDate 2015
dc.date.none.fl_str_mv 2015-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/12111
Gorla, David Eladio; Vargas Ortiz, Roberto; Catala, Silvia Susana; Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation; BioMed Central; Parasites and Vectors; 8; 255; 4-2015; 8
1756-3305
url http://hdl.handle.net/11336/12111
identifier_str_mv Gorla, David Eladio; Vargas Ortiz, Roberto; Catala, Silvia Susana; Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation; BioMed Central; Parasites and Vectors; 8; 255; 4-2015; 8
1756-3305
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-015-0762-0
info:eu-repo/semantics/altIdentifier/doi/10.1186/s13071-015-0762-0
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv BioMed Central
publisher.none.fl_str_mv BioMed Central
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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