Effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of Triatoma infestans in rural northwestern Argentina
The long-term effects on domiciliary reinfestation by Triatoma infestans of smoothing the plaster of indoor walls prior to insecticide application (in Amamá village) relative to only insecticide application (in Trinidad-Mercedes villages) were evaluated in rural northwestern Argentina from 1992 to 1...
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2002
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v84_n2_p101_Cecere http://hdl.handle.net/20.500.12110/paper_0001706X_v84_n2_p101_Cecere |
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paper:paper_0001706X_v84_n2_p101_Cecere2023-06-08T14:21:19Z Effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of Triatoma infestans in rural northwestern Argentina Chagas disease Control Environmental management Insecticide Surveillance Triatoma infestans deltamethrin insecticide insecticide Argentina article environmental management housing infection rate infestation logistic regression analysis nonhuman pesticide spraying Triatoma infestans Animals Argentina Chagas Disease Ectoparasitic Infestations Housing Humans Insect Control Insecticides Nitriles Population Surveillance Prevalence Pyrethrins Triatoma Triatoma infestans Trypanosoma Trypanosoma cruzi The long-term effects on domiciliary reinfestation by Triatoma infestans of smoothing the plaster of indoor walls prior to insecticide application (in Amamá village) relative to only insecticide application (in Trinidad-Mercedes villages) were evaluated in rural northwestern Argentina from 1992 to 1997. All domestic and peridomestic areas of each house were sprayed with 2.5% suspension concentrate deltamethrin at 25 mg/m2 in October 1992, and infestations were assessed by various methods every 6 months. Domiciliary infestation decreased from 72-88% in 1992 to 6-17% in late 1995, to increase moderately thereafter without returning to baseline rates. Peridomestic sites were the first in becoming reinfested, and reached more abundant T. infestans populations than domiciliary areas. Domiciliary infestation rates and bug abundances were not significantly different between communities during surveillance. Domiciliary infestation rates in well-plastered houses were very low (5-9%) and approximately stable until 1996, but in houses with regular or bad plaster they consistently increased from 5 to 19-21% in both communities. Logistic multiple regression analysis showed that the likelihood of domestic infestation assessed through householders' collections was significantly and positively associated with the occurrence of an infested peridomestic site in the respective house, the occurrence of high-density domestic infestations before interventions, and well-plastered walls in 1996. Combining insecticide spraying and partial improvement of walls controlled domestic infestations and transmission of Trypanosoma cruzi effectively, but was not sufficient to eliminate T. infestans from the study area or increase the effectiveness of careful chemical control. © 2002 Elsevier Science B.V. All rights reserved. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v84_n2_p101_Cecere http://hdl.handle.net/20.500.12110/paper_0001706X_v84_n2_p101_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 |
Chagas disease Control Environmental management Insecticide Surveillance Triatoma infestans deltamethrin insecticide insecticide Argentina article environmental management housing infection rate infestation logistic regression analysis nonhuman pesticide spraying Triatoma infestans Animals Argentina Chagas Disease Ectoparasitic Infestations Housing Humans Insect Control Insecticides Nitriles Population Surveillance Prevalence Pyrethrins Triatoma Triatoma infestans Trypanosoma Trypanosoma cruzi |
| spellingShingle |
Chagas disease Control Environmental management Insecticide Surveillance Triatoma infestans deltamethrin insecticide insecticide Argentina article environmental management housing infection rate infestation logistic regression analysis nonhuman pesticide spraying Triatoma infestans Animals Argentina Chagas Disease Ectoparasitic Infestations Housing Humans Insect Control Insecticides Nitriles Population Surveillance Prevalence Pyrethrins Triatoma Triatoma infestans Trypanosoma Trypanosoma cruzi Effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of Triatoma infestans in rural northwestern Argentina |
| topic_facet |
Chagas disease Control Environmental management Insecticide Surveillance Triatoma infestans deltamethrin insecticide insecticide Argentina article environmental management housing infection rate infestation logistic regression analysis nonhuman pesticide spraying Triatoma infestans Animals Argentina Chagas Disease Ectoparasitic Infestations Housing Humans Insect Control Insecticides Nitriles Population Surveillance Prevalence Pyrethrins Triatoma Triatoma infestans Trypanosoma Trypanosoma cruzi |
| description |
The long-term effects on domiciliary reinfestation by Triatoma infestans of smoothing the plaster of indoor walls prior to insecticide application (in Amamá village) relative to only insecticide application (in Trinidad-Mercedes villages) were evaluated in rural northwestern Argentina from 1992 to 1997. All domestic and peridomestic areas of each house were sprayed with 2.5% suspension concentrate deltamethrin at 25 mg/m2 in October 1992, and infestations were assessed by various methods every 6 months. Domiciliary infestation decreased from 72-88% in 1992 to 6-17% in late 1995, to increase moderately thereafter without returning to baseline rates. Peridomestic sites were the first in becoming reinfested, and reached more abundant T. infestans populations than domiciliary areas. Domiciliary infestation rates and bug abundances were not significantly different between communities during surveillance. Domiciliary infestation rates in well-plastered houses were very low (5-9%) and approximately stable until 1996, but in houses with regular or bad plaster they consistently increased from 5 to 19-21% in both communities. Logistic multiple regression analysis showed that the likelihood of domestic infestation assessed through householders' collections was significantly and positively associated with the occurrence of an infested peridomestic site in the respective house, the occurrence of high-density domestic infestations before interventions, and well-plastered walls in 1996. Combining insecticide spraying and partial improvement of walls controlled domestic infestations and transmission of Trypanosoma cruzi effectively, but was not sufficient to eliminate T. infestans from the study area or increase the effectiveness of careful chemical control. © 2002 Elsevier Science B.V. All rights reserved. |
| title |
Effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of Triatoma infestans in rural northwestern Argentina |
| title_short |
Effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of Triatoma infestans in rural northwestern Argentina |
| title_full |
Effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of Triatoma infestans in rural northwestern Argentina |
| title_fullStr |
Effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of Triatoma infestans in rural northwestern Argentina |
| title_full_unstemmed |
Effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of Triatoma infestans in rural northwestern Argentina |
| title_sort |
effects of partial housing improvement and insecticide spraying on the reinfestation dynamics of triatoma infestans in rural northwestern argentina |
| publishDate |
2002 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v84_n2_p101_Cecere http://hdl.handle.net/20.500.12110/paper_0001706X_v84_n2_p101_Cecere |
| _version_ |
1768542764711018496 |