Reinfestation Sources for Chagas Disease Vector, Triatoma infestans, Argentina

Reinfestation by Triatoma infestans after insecticide spraying has caused elimination efforts in the dry Chaco region to fail repeatedly. The sources and spatial extent that need to be considered to understand the reinfestation pattern and to plan a comprehensive control program were studied in 2 ad...

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Main Authors: María C. Cecere, Gonzalo Vazquez-Prokopec, Ricardo E. Gürtler, Uriel Kitron
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2006-07-01
Series:Emerging Infectious Diseases
Subjects:
Online Access:https://wwwnc.cdc.gov/eid/article/12/7/05-1445_article
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author María C. Cecere
Gonzalo Vazquez-Prokopec
Ricardo E. Gürtler
Uriel Kitron
author_facet María C. Cecere
Gonzalo Vazquez-Prokopec
Ricardo E. Gürtler
Uriel Kitron
author_sort María C. Cecere
collection DOAJ
description Reinfestation by Triatoma infestans after insecticide spraying has caused elimination efforts in the dry Chaco region to fail repeatedly. The sources and spatial extent that need to be considered to understand the reinfestation pattern and to plan a comprehensive control program were studied in 2 adjacent rural communities in northwestern Argentina from 1993 to 1997. The effects of external, residual, and primary sources on the reinfestation pattern were evaluated by using geographic information systems, satellite imagery, spatial statistics, and 5-year retrospective data for 1,881 sites. The reinfestation process depended on primary internal sources and on surrounding infested communities. In the dry Chaco, successfully reducing the risk for reinfestation in a community depends on treating all communities and isolated sites within 1,500 m of the target community. In addition, during the surveillance phase, spraying all sites within 500 m of new foci will delay reinfestation.
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spelling doaj.art-cf1c3e0dce6e4c6e91665814ce4e9a422022-12-22T03:04:26ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592006-07-011271096110210.3201/eid1207.051445Reinfestation Sources for Chagas Disease Vector, Triatoma infestans, ArgentinaMaría C. CecereGonzalo Vazquez-ProkopecRicardo E. GürtlerUriel KitronReinfestation by Triatoma infestans after insecticide spraying has caused elimination efforts in the dry Chaco region to fail repeatedly. The sources and spatial extent that need to be considered to understand the reinfestation pattern and to plan a comprehensive control program were studied in 2 adjacent rural communities in northwestern Argentina from 1993 to 1997. The effects of external, residual, and primary sources on the reinfestation pattern were evaluated by using geographic information systems, satellite imagery, spatial statistics, and 5-year retrospective data for 1,881 sites. The reinfestation process depended on primary internal sources and on surrounding infested communities. In the dry Chaco, successfully reducing the risk for reinfestation in a community depends on treating all communities and isolated sites within 1,500 m of the target community. In addition, during the surveillance phase, spraying all sites within 500 m of new foci will delay reinfestation.https://wwwnc.cdc.gov/eid/article/12/7/05-1445_articleChagas diseaseGeographic Information SystemsVector controlTriatoma infestansSpatial clusteringArgentina
spellingShingle María C. Cecere
Gonzalo Vazquez-Prokopec
Ricardo E. Gürtler
Uriel Kitron
Reinfestation Sources for Chagas Disease Vector, Triatoma infestans, Argentina
Emerging Infectious Diseases
Chagas disease
Geographic Information Systems
Vector control
Triatoma infestans
Spatial clustering
Argentina
title Reinfestation Sources for Chagas Disease Vector, Triatoma infestans, Argentina
title_full Reinfestation Sources for Chagas Disease Vector, Triatoma infestans, Argentina
title_fullStr Reinfestation Sources for Chagas Disease Vector, Triatoma infestans, Argentina
title_full_unstemmed Reinfestation Sources for Chagas Disease Vector, Triatoma infestans, Argentina
title_short Reinfestation Sources for Chagas Disease Vector, Triatoma infestans, Argentina
title_sort reinfestation sources for chagas disease vector triatoma infestans argentina
topic Chagas disease
Geographic Information Systems
Vector control
Triatoma infestans
Spatial clustering
Argentina
url https://wwwnc.cdc.gov/eid/article/12/7/05-1445_article
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