Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps
- Autores
- Rojas de Arias, Antonieta; Abad Franch, Fernando; Acosta, Nidia; López, Elsa; González, Nilsa; Zerba, Eduardo Nicolás; Tarelli, Guillermo; Masuh, Hector Mario
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Background: Chagas disease prevention critically depends on keeping houses free of triatomine vectors. Insecticide spraying is very effective, but re-infestation of treated dwellings is commonplace. Early detection-elimination of re-infestation foci is key to long-term control; however, all available vector-detection methods have low sensitivity. Chemically-baited traps are widely used in vector and pest control-surveillance systems; here, we test this approach for Triatoma spp. detection under field conditions in the Gran Chaco. Methodology/Principal Findings: Using a repeated-sampling approach and logistic models that explicitly take detection failures into account, we simultaneously estimate vector occurrence and detection probabilities. We then model detection probabilities (conditioned on vector occurrence) as a function of trapping system to measure the effect of chemical baits. We find a positive effect of baits after three (odds ratio [OR] 5.10; 95% confidence interval [CI95] 2.59-10.04) and six months (OR 2.20, CI95 1.04-4.65). Detection probabilities are estimated at p ≈ 0.40-0.50 for baited and at just p ≈ 0.15 for control traps. Bait effect is very strong on T. infestans (three-month assessment: OR 12.30, CI95 4.44-34.10; p ≈ 0.64), whereas T. sordida is captured with similar frequency in baited and unbaited traps. Conclusions/Significance: Chemically-baited traps hold promise for T. infestans surveillance; the sensitivity of the system at detecting small re-infestation foci rises from 12.5% to 63.6% when traps are baited with semiochemicals. Accounting for imperfect detection, infestation is estimated at 26% (CI95 16-40) after three and 20% (CI95 11-34) after six months. In the same assessments, traps detected infestation in 14% and 8.5% of dwellings, whereas timed manual searches (the standard approach) did so in just 1.4% of dwellings only in the first survey. Since infestation rates are the main indicator used for decision-making in control programs, the approach we present may help improve T. infestans surveillance and control program management.
Fil: Rojas de Arias, Antonieta. Fundación Moises; Paraguay
Fil: Abad Franch, Fernando. Instituto Leonidas e Maria Deane; Brasil
Fil: Acosta, Nidia. Universidad Nacional de Asunción; Paraguay
Fil: López, Elsa. Universidad Nacional de Asunción; Paraguay
Fil: González, Nilsa. Universidad Nacional de Asunción; Paraguay
Fil: Zerba, Eduardo Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina
Fil: Tarelli, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina
Fil: Masuh, Hector Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina - Materia
-
Triatoma infestans
Semiochemicals
Sticky traps
Chagas disease - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/81854
Ver los metadatos del registro completo
id |
CONICETDig_91fa66a409ea383f0bc10d923b484781 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/81854 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky TrapsRojas de Arias, AntonietaAbad Franch, FernandoAcosta, NidiaLópez, ElsaGonzález, NilsaZerba, Eduardo NicolásTarelli, GuillermoMasuh, Hector MarioTriatoma infestansSemiochemicalsSticky trapsChagas diseasehttps://purl.org/becyt/ford/3.4https://purl.org/becyt/ford/3Background: Chagas disease prevention critically depends on keeping houses free of triatomine vectors. Insecticide spraying is very effective, but re-infestation of treated dwellings is commonplace. Early detection-elimination of re-infestation foci is key to long-term control; however, all available vector-detection methods have low sensitivity. Chemically-baited traps are widely used in vector and pest control-surveillance systems; here, we test this approach for Triatoma spp. detection under field conditions in the Gran Chaco. Methodology/Principal Findings: Using a repeated-sampling approach and logistic models that explicitly take detection failures into account, we simultaneously estimate vector occurrence and detection probabilities. We then model detection probabilities (conditioned on vector occurrence) as a function of trapping system to measure the effect of chemical baits. We find a positive effect of baits after three (odds ratio [OR] 5.10; 95% confidence interval [CI95] 2.59-10.04) and six months (OR 2.20, CI95 1.04-4.65). Detection probabilities are estimated at p ≈ 0.40-0.50 for baited and at just p ≈ 0.15 for control traps. Bait effect is very strong on T. infestans (three-month assessment: OR 12.30, CI95 4.44-34.10; p ≈ 0.64), whereas T. sordida is captured with similar frequency in baited and unbaited traps. Conclusions/Significance: Chemically-baited traps hold promise for T. infestans surveillance; the sensitivity of the system at detecting small re-infestation foci rises from 12.5% to 63.6% when traps are baited with semiochemicals. Accounting for imperfect detection, infestation is estimated at 26% (CI95 16-40) after three and 20% (CI95 11-34) after six months. In the same assessments, traps detected infestation in 14% and 8.5% of dwellings, whereas timed manual searches (the standard approach) did so in just 1.4% of dwellings only in the first survey. Since infestation rates are the main indicator used for decision-making in control programs, the approach we present may help improve T. infestans surveillance and control program management.Fil: Rojas de Arias, Antonieta. Fundación Moises; ParaguayFil: Abad Franch, Fernando. Instituto Leonidas e Maria Deane; BrasilFil: Acosta, Nidia. Universidad Nacional de Asunción; ParaguayFil: López, Elsa. Universidad Nacional de Asunción; ParaguayFil: González, Nilsa. Universidad Nacional de Asunción; ParaguayFil: Zerba, Eduardo Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; ArgentinaFil: Tarelli, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; ArgentinaFil: Masuh, Hector Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; ArgentinaPublic Library of Science2012-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/81854Rojas de Arias, Antonieta; Abad Franch, Fernando; Acosta, Nidia; López, Elsa; González, Nilsa; et al.; Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps; Public Library of Science; PLoS Neglected Tropical Diseases; 6; 9; 9-2012; 1-101935-2735CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0001822info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pntd.0001822info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:18:25Zoai:ri.conicet.gov.ar:11336/81854instacron: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:34982025-09-29 10:18:25.751CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps |
title |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps |
spellingShingle |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps Rojas de Arias, Antonieta Triatoma infestans Semiochemicals Sticky traps Chagas disease |
title_short |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps |
title_full |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps |
title_fullStr |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps |
title_full_unstemmed |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps |
title_sort |
Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps |
dc.creator.none.fl_str_mv |
Rojas de Arias, Antonieta Abad Franch, Fernando Acosta, Nidia López, Elsa González, Nilsa Zerba, Eduardo Nicolás Tarelli, Guillermo Masuh, Hector Mario |
author |
Rojas de Arias, Antonieta |
author_facet |
Rojas de Arias, Antonieta Abad Franch, Fernando Acosta, Nidia López, Elsa González, Nilsa Zerba, Eduardo Nicolás Tarelli, Guillermo Masuh, Hector Mario |
author_role |
author |
author2 |
Abad Franch, Fernando Acosta, Nidia López, Elsa González, Nilsa Zerba, Eduardo Nicolás Tarelli, Guillermo Masuh, Hector Mario |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
Triatoma infestans Semiochemicals Sticky traps Chagas disease |
topic |
Triatoma infestans Semiochemicals Sticky traps Chagas disease |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.4 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Background: Chagas disease prevention critically depends on keeping houses free of triatomine vectors. Insecticide spraying is very effective, but re-infestation of treated dwellings is commonplace. Early detection-elimination of re-infestation foci is key to long-term control; however, all available vector-detection methods have low sensitivity. Chemically-baited traps are widely used in vector and pest control-surveillance systems; here, we test this approach for Triatoma spp. detection under field conditions in the Gran Chaco. Methodology/Principal Findings: Using a repeated-sampling approach and logistic models that explicitly take detection failures into account, we simultaneously estimate vector occurrence and detection probabilities. We then model detection probabilities (conditioned on vector occurrence) as a function of trapping system to measure the effect of chemical baits. We find a positive effect of baits after three (odds ratio [OR] 5.10; 95% confidence interval [CI95] 2.59-10.04) and six months (OR 2.20, CI95 1.04-4.65). Detection probabilities are estimated at p ≈ 0.40-0.50 for baited and at just p ≈ 0.15 for control traps. Bait effect is very strong on T. infestans (three-month assessment: OR 12.30, CI95 4.44-34.10; p ≈ 0.64), whereas T. sordida is captured with similar frequency in baited and unbaited traps. Conclusions/Significance: Chemically-baited traps hold promise for T. infestans surveillance; the sensitivity of the system at detecting small re-infestation foci rises from 12.5% to 63.6% when traps are baited with semiochemicals. Accounting for imperfect detection, infestation is estimated at 26% (CI95 16-40) after three and 20% (CI95 11-34) after six months. In the same assessments, traps detected infestation in 14% and 8.5% of dwellings, whereas timed manual searches (the standard approach) did so in just 1.4% of dwellings only in the first survey. Since infestation rates are the main indicator used for decision-making in control programs, the approach we present may help improve T. infestans surveillance and control program management. Fil: Rojas de Arias, Antonieta. Fundación Moises; Paraguay Fil: Abad Franch, Fernando. Instituto Leonidas e Maria Deane; Brasil Fil: Acosta, Nidia. Universidad Nacional de Asunción; Paraguay Fil: López, Elsa. Universidad Nacional de Asunción; Paraguay Fil: González, Nilsa. Universidad Nacional de Asunción; Paraguay Fil: Zerba, Eduardo Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina Fil: Tarelli, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina Fil: Masuh, Hector Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina |
description |
Background: Chagas disease prevention critically depends on keeping houses free of triatomine vectors. Insecticide spraying is very effective, but re-infestation of treated dwellings is commonplace. Early detection-elimination of re-infestation foci is key to long-term control; however, all available vector-detection methods have low sensitivity. Chemically-baited traps are widely used in vector and pest control-surveillance systems; here, we test this approach for Triatoma spp. detection under field conditions in the Gran Chaco. Methodology/Principal Findings: Using a repeated-sampling approach and logistic models that explicitly take detection failures into account, we simultaneously estimate vector occurrence and detection probabilities. We then model detection probabilities (conditioned on vector occurrence) as a function of trapping system to measure the effect of chemical baits. We find a positive effect of baits after three (odds ratio [OR] 5.10; 95% confidence interval [CI95] 2.59-10.04) and six months (OR 2.20, CI95 1.04-4.65). Detection probabilities are estimated at p ≈ 0.40-0.50 for baited and at just p ≈ 0.15 for control traps. Bait effect is very strong on T. infestans (three-month assessment: OR 12.30, CI95 4.44-34.10; p ≈ 0.64), whereas T. sordida is captured with similar frequency in baited and unbaited traps. Conclusions/Significance: Chemically-baited traps hold promise for T. infestans surveillance; the sensitivity of the system at detecting small re-infestation foci rises from 12.5% to 63.6% when traps are baited with semiochemicals. Accounting for imperfect detection, infestation is estimated at 26% (CI95 16-40) after three and 20% (CI95 11-34) after six months. In the same assessments, traps detected infestation in 14% and 8.5% of dwellings, whereas timed manual searches (the standard approach) did so in just 1.4% of dwellings only in the first survey. Since infestation rates are the main indicator used for decision-making in control programs, the approach we present may help improve T. infestans surveillance and control program management. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09 |
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/11336/81854 Rojas de Arias, Antonieta; Abad Franch, Fernando; Acosta, Nidia; López, Elsa; González, Nilsa; et al.; Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps; Public Library of Science; PLoS Neglected Tropical Diseases; 6; 9; 9-2012; 1-10 1935-2735 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/81854 |
identifier_str_mv |
Rojas de Arias, Antonieta; Abad Franch, Fernando; Acosta, Nidia; López, Elsa; González, Nilsa; et al.; Post-Control Surveillance of Triatoma infestans and Triatoma sordida with Chemically-Baited Sticky Traps; Public Library of Science; PLoS Neglected Tropical Diseases; 6; 9; 9-2012; 1-10 1935-2735 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0001822 info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pntd.0001822 |
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 |
Public Library of Science |
publisher.none.fl_str_mv |
Public Library of Science |
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 |
_version_ |
1844614145994915840 |
score |
13.070432 |