Ecosystem perspective of the process of reinfestation by Triatoma infestans in rural communities of the Gran Chaco ecoregion : final scientific report for Argentina (2007-2009)
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Date
2009
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University of Buenos Aires, Buenos Aires, AR
Abstract
Independent evidence from screening assays indicate that baseline populations of T. infestans had increased resistance to pyrethroids throughout rural districts. Repeated spraying with pyrethroids of persistent sites of infestation demonstrated that some bug populations could not be eliminated even after 4 professional treatments. By identifying and mapping households and spatial clusters at higher risk of transmission, targeted strategies involving close monitoring of infestation may be more cost-effective in disperse rural areas than blanket vector surveillance strategies. Transmission was more intense in domestic sites, followed by storerooms or kitchens. The report provides project details.
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IDRC Final Report
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Keywords
GRAN CHACO, TRIATOMA, CHAGAS DISEASE, DISEASE VECTORS, VECTOR-BORNE DISEASES, HOUSING, ECOSYSTEMS APPROACH, COMMUNICABLE DISEASES, PESTICIDES, BOLIVIA, PARAGUAY, ARGENTINA, SOUTH AMERICA