Improved chemical control of chagas disease vectors in the dry chaco region
The effectiveness of two doses of suspension concentrate (SC) pyrethroid insecticides in suppressing peridomestic populations of Triatoma infestons (Klug) was evaluated in 28 rural communities located in Santiago del Estero province, northwestern Argentina, including 388 houses and 1,516 identified...
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2013
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v50_n2_p394_Cecere http://hdl.handle.net/20.500.12110/paper_00222585_v50_n2_p394_Cecere |
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paper:paper_00222585_v50_n2_p394_Cecere2023-06-08T14:48:30Z Improved chemical control of chagas disease vectors in the dry chaco region Cecere, Maria Carla Vázquez-Prokopec, Gonzalo Martín Ceballos, Leonardo Adrián Gurtler, Ricardo Esteban Chaco Chagas disease insecticide pyrethroid vector control cipermethrin deltamethrin insecticide nitrile pyrethroid animal animal housing Argentina article Chagas disease controlled clinical trial controlled study disease carrier dose response goat housing insect control intervention study methodology randomized controlled trial rural population statistical model swine time Triatoma Animals Argentina Chagas Disease Dose-Response Relationship, Drug Goats Housing Housing, Animal Insect Control Insect Vectors Insecticides Intervention Studies Logistic Models Nitriles Pyrethrins Rural Population Sus scrofa Time Factors Triatoma The effectiveness of two doses of suspension concentrate (SC) pyrethroid insecticides in suppressing peridomestic populations of Triatoma infestons (Klug) was evaluated in 28 rural communities located in Santiago del Estero province, northwestern Argentina, including 388 houses and 1,516 identified sites. Four treatments were randomly assigned to peridomiciles within each community: 5% SC β-cypermethrin at standard (S, 50 mg active ingredient [AI] /m2) and double dose (2S), and 2.5% SC deltamethrin at standard (D, 25 mg [AI]/m2) and double dose (2D). Simultaneously, we assessed the effects of both pyrethroids applied at standard doses against domestic infestations. Bug infestation at the site level was assessed by timed manual collections with a dislodging agent at baseline, 13 and 21 mo postspraying (MPS). In domiciles, D and S nearly suppressed all T. infestans infestations up to 21 MPS. In peridomestic sites infested before interventions, multiple logistic regression analysis showed that site-level reinfestation at 13 MPS was significantly lower for treatment 2D (1%) than for other treatments, whereas 2S (6%), D (5%), and S (14%) did not differ significantly between them. The risk of reinfestation after spraying was significantly greater in goat or pig corrals than in other peridomestic ecotopes (in which treatments did not differ significantly), and in sites infested before interventions than in uninfested sites. The application of SC deltamethrin at double dose in goat or pig corrals may suppress T. infestans foci and achieve more sustained effects in the dry Chaco. © 2013 Entomological Society of America. Fil:Cecere, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vazquez-Prokopec, G.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ceballos, L.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gürtler, R.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v50_n2_p394_Cecere http://hdl.handle.net/20.500.12110/paper_00222585_v50_n2_p394_Cecere |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Chaco Chagas disease insecticide pyrethroid vector control cipermethrin deltamethrin insecticide nitrile pyrethroid animal animal housing Argentina article Chagas disease controlled clinical trial controlled study disease carrier dose response goat housing insect control intervention study methodology randomized controlled trial rural population statistical model swine time Triatoma Animals Argentina Chagas Disease Dose-Response Relationship, Drug Goats Housing Housing, Animal Insect Control Insect Vectors Insecticides Intervention Studies Logistic Models Nitriles Pyrethrins Rural Population Sus scrofa Time Factors Triatoma |
| spellingShingle |
Chaco Chagas disease insecticide pyrethroid vector control cipermethrin deltamethrin insecticide nitrile pyrethroid animal animal housing Argentina article Chagas disease controlled clinical trial controlled study disease carrier dose response goat housing insect control intervention study methodology randomized controlled trial rural population statistical model swine time Triatoma Animals Argentina Chagas Disease Dose-Response Relationship, Drug Goats Housing Housing, Animal Insect Control Insect Vectors Insecticides Intervention Studies Logistic Models Nitriles Pyrethrins Rural Population Sus scrofa Time Factors Triatoma Cecere, Maria Carla Vázquez-Prokopec, Gonzalo Martín Ceballos, Leonardo Adrián Gurtler, Ricardo Esteban Improved chemical control of chagas disease vectors in the dry chaco region |
| topic_facet |
Chaco Chagas disease insecticide pyrethroid vector control cipermethrin deltamethrin insecticide nitrile pyrethroid animal animal housing Argentina article Chagas disease controlled clinical trial controlled study disease carrier dose response goat housing insect control intervention study methodology randomized controlled trial rural population statistical model swine time Triatoma Animals Argentina Chagas Disease Dose-Response Relationship, Drug Goats Housing Housing, Animal Insect Control Insect Vectors Insecticides Intervention Studies Logistic Models Nitriles Pyrethrins Rural Population Sus scrofa Time Factors Triatoma |
| description |
The effectiveness of two doses of suspension concentrate (SC) pyrethroid insecticides in suppressing peridomestic populations of Triatoma infestons (Klug) was evaluated in 28 rural communities located in Santiago del Estero province, northwestern Argentina, including 388 houses and 1,516 identified sites. Four treatments were randomly assigned to peridomiciles within each community: 5% SC β-cypermethrin at standard (S, 50 mg active ingredient [AI] /m2) and double dose (2S), and 2.5% SC deltamethrin at standard (D, 25 mg [AI]/m2) and double dose (2D). Simultaneously, we assessed the effects of both pyrethroids applied at standard doses against domestic infestations. Bug infestation at the site level was assessed by timed manual collections with a dislodging agent at baseline, 13 and 21 mo postspraying (MPS). In domiciles, D and S nearly suppressed all T. infestans infestations up to 21 MPS. In peridomestic sites infested before interventions, multiple logistic regression analysis showed that site-level reinfestation at 13 MPS was significantly lower for treatment 2D (1%) than for other treatments, whereas 2S (6%), D (5%), and S (14%) did not differ significantly between them. The risk of reinfestation after spraying was significantly greater in goat or pig corrals than in other peridomestic ecotopes (in which treatments did not differ significantly), and in sites infested before interventions than in uninfested sites. The application of SC deltamethrin at double dose in goat or pig corrals may suppress T. infestans foci and achieve more sustained effects in the dry Chaco. © 2013 Entomological Society of America. |
| author |
Cecere, Maria Carla Vázquez-Prokopec, Gonzalo Martín Ceballos, Leonardo Adrián Gurtler, Ricardo Esteban |
| author_facet |
Cecere, Maria Carla Vázquez-Prokopec, Gonzalo Martín Ceballos, Leonardo Adrián Gurtler, Ricardo Esteban |
| author_sort |
Cecere, Maria Carla |
| title |
Improved chemical control of chagas disease vectors in the dry chaco region |
| title_short |
Improved chemical control of chagas disease vectors in the dry chaco region |
| title_full |
Improved chemical control of chagas disease vectors in the dry chaco region |
| title_fullStr |
Improved chemical control of chagas disease vectors in the dry chaco region |
| title_full_unstemmed |
Improved chemical control of chagas disease vectors in the dry chaco region |
| title_sort |
improved chemical control of chagas disease vectors in the dry chaco region |
| publishDate |
2013 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v50_n2_p394_Cecere http://hdl.handle.net/20.500.12110/paper_00222585_v50_n2_p394_Cecere |
| work_keys_str_mv |
AT ceceremariacarla improvedchemicalcontrolofchagasdiseasevectorsinthedrychacoregion AT vazquezprokopecgonzalomartin improvedchemicalcontrolofchagasdiseasevectorsinthedrychacoregion AT ceballosleonardoadrian improvedchemicalcontrolofchagasdiseasevectorsinthedrychacoregion AT gurtlerricardoesteban improvedchemicalcontrolofchagasdiseasevectorsinthedrychacoregion |
| _version_ |
1768546662675906560 |