The role of the peridomiciliary area in the elimination of Triatoma infestans from rural Argentine communities
The purpose of this study was to identify the origin of Triatoma infestans reinfestation and study its dynamics following spraying with deltamethrin inside and around 94 houses in three rural communities in northwestern Argentina. The effectiveness of the spraying was evaluated immediately after the...
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1997
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10204989_v1_n4_p273_Cecere http://hdl.handle.net/20.500.12110/paper_10204989_v1_n4_p273_Cecere |
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paper:paper_10204989_v1_n4_p273_Cecere2023-06-08T15:59:55Z The role of the peridomiciliary area in the elimination of Triatoma infestans from rural Argentine communities Cecere, Maria Carla Gurtler, Ricardo Esteban deltamethrin insecticide aerosol Argentina article biosensor chicken environmental exposure household infestation insect control nonhuman pesticide spraying rural population Triatoma infestans The purpose of this study was to identify the origin of Triatoma infestans reinfestation and study its dynamics following spraying with deltamethrin inside and around 94 houses in three rural communities in northwestern Argentina. The effectiveness of the spraying was evaluated immediately after the houses were sprayed and two months later. In addition, five residual peridomiciliary foci were found and sprayed, as well as three preexisting ones that had not been sprayed. To monitor reinfestation, biosensors were placed in the houses and each family was also asked to capture triatomines and keep them in plastic bags; in addition, triatomines were searched for in and around houses, using an aerosol that dislodged them from their hiding places. Selective sprayings were carried out only where a colony of T. infestans was found. During the 30 months of follow-up, the percentage of houses in which any T. infestans were captured varied between 3% and 9%. In six houses, T. infestans were captured during more than one evaluation. The number of peridomiciliary areas found to be infested (19) was double the number of infested houses (9). Colonies of T. infestans were found only in the peridomiciliary areas, where the number of T. infestans captured was six times higher than in the houses. Chickens were the host most frequently associated with peridomiciliary foci. This area was the origin and principal source of reinfestation. To reduce the speed of reinfestation and the frequency with which sprayings are needed, the following environmental and chemical control methods must be combined in the peridomiciliary area: reduce the number of hiding places of triatomines; restrict the raising of birds to structures that cannot be colonized by triatomines; apply an insecticide that is less likely to be degraded by exposure to the elements, or perform a second spraying 6 to 12 months after the first; and employ a device for early detection of the presence of T. infestans around houses. Fil:Cecere, M.C. 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. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10204989_v1_n4_p273_Cecere http://hdl.handle.net/20.500.12110/paper_10204989_v1_n4_p273_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 |
deltamethrin insecticide aerosol Argentina article biosensor chicken environmental exposure household infestation insect control nonhuman pesticide spraying rural population Triatoma infestans |
| spellingShingle |
deltamethrin insecticide aerosol Argentina article biosensor chicken environmental exposure household infestation insect control nonhuman pesticide spraying rural population Triatoma infestans Cecere, Maria Carla Gurtler, Ricardo Esteban The role of the peridomiciliary area in the elimination of Triatoma infestans from rural Argentine communities |
| topic_facet |
deltamethrin insecticide aerosol Argentina article biosensor chicken environmental exposure household infestation insect control nonhuman pesticide spraying rural population Triatoma infestans |
| description |
The purpose of this study was to identify the origin of Triatoma infestans reinfestation and study its dynamics following spraying with deltamethrin inside and around 94 houses in three rural communities in northwestern Argentina. The effectiveness of the spraying was evaluated immediately after the houses were sprayed and two months later. In addition, five residual peridomiciliary foci were found and sprayed, as well as three preexisting ones that had not been sprayed. To monitor reinfestation, biosensors were placed in the houses and each family was also asked to capture triatomines and keep them in plastic bags; in addition, triatomines were searched for in and around houses, using an aerosol that dislodged them from their hiding places. Selective sprayings were carried out only where a colony of T. infestans was found. During the 30 months of follow-up, the percentage of houses in which any T. infestans were captured varied between 3% and 9%. In six houses, T. infestans were captured during more than one evaluation. The number of peridomiciliary areas found to be infested (19) was double the number of infested houses (9). Colonies of T. infestans were found only in the peridomiciliary areas, where the number of T. infestans captured was six times higher than in the houses. Chickens were the host most frequently associated with peridomiciliary foci. This area was the origin and principal source of reinfestation. To reduce the speed of reinfestation and the frequency with which sprayings are needed, the following environmental and chemical control methods must be combined in the peridomiciliary area: reduce the number of hiding places of triatomines; restrict the raising of birds to structures that cannot be colonized by triatomines; apply an insecticide that is less likely to be degraded by exposure to the elements, or perform a second spraying 6 to 12 months after the first; and employ a device for early detection of the presence of T. infestans around houses. |
| author |
Cecere, Maria Carla Gurtler, Ricardo Esteban |
| author_facet |
Cecere, Maria Carla Gurtler, Ricardo Esteban |
| author_sort |
Cecere, Maria Carla |
| title |
The role of the peridomiciliary area in the elimination of Triatoma infestans from rural Argentine communities |
| title_short |
The role of the peridomiciliary area in the elimination of Triatoma infestans from rural Argentine communities |
| title_full |
The role of the peridomiciliary area in the elimination of Triatoma infestans from rural Argentine communities |
| title_fullStr |
The role of the peridomiciliary area in the elimination of Triatoma infestans from rural Argentine communities |
| title_full_unstemmed |
The role of the peridomiciliary area in the elimination of Triatoma infestans from rural Argentine communities |
| title_sort |
role of the peridomiciliary area in the elimination of triatoma infestans from rural argentine communities |
| publishDate |
1997 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10204989_v1_n4_p273_Cecere http://hdl.handle.net/20.500.12110/paper_10204989_v1_n4_p273_Cecere |
| work_keys_str_mv |
AT ceceremariacarla theroleoftheperidomiciliaryareaintheeliminationoftriatomainfestansfromruralargentinecommunities AT gurtlerricardoesteban theroleoftheperidomiciliaryareaintheeliminationoftriatomainfestansfromruralargentinecommunities AT ceceremariacarla roleoftheperidomiciliaryareaintheeliminationoftriatomainfestansfromruralargentinecommunities AT gurtlerricardoesteban roleoftheperidomiciliaryareaintheeliminationoftriatomainfestansfromruralargentinecommunities |
| _version_ |
1768544967733542912 |