Ecohealth interventions limit triatomine reinfestation following insecticide spraying in La Brea, Guatemala.

Abstract

In this study, we evaluate the effect of participatory Ecohealth interventions on domestic reinfestation of the Chagas disease vector Triatoma dimidiata after village-wide suppression of the vector population using a residual insecticide. The study was conducted in the rural community of La Brea, Guatemala between 2002 and 2009 where vector infestation was analyzed within a spatial data framework based on entomological and socio-economic surveys of homesteads within the village. Participatory interventions focused on community awareness and low-cost home improvements using local materials to limit areas of refuge and alternative blood meals for the vector within the home, and potential shelter for the vector outside the home. As a result, domestic infestation was maintained at ≤ 3% and peridomestic infestation at ≤ 2% for 5 years beyond the last insecticide spraying, in sharp contrast to the rapid reinfestation experienced in earlier insecticide only interventions.

• Authors: David E Lucero, Leslie A Morrissey, Donna M Rizzo, Antonieta Rodas, Roberto Garnica, Lori Stevens, Dulce M Bustamante, Maria Carlota Monroy
• Journal: The American journal of tropical medicine and hygiene (Am J Trop Med Hyg) Vol. 88 Issue 4 Pg. 630-7 (Apr 2013) ISSN: 1476-1645 [Electronic] United States
• PMID: 23382173 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)

Chemical References

• Insecticides

Topics

• Animals
• Chagas Disease (prevention & control, transmission)
• Ectoparasitic Infestations (prevention & control, transmission)
• Guatemala
• Humans
• Insect Control (methods)
• Insect Vectors (growth & development, parasitology)
• Insecticides
• National Health Programs
• Population Density
• Program Evaluation (methods)
• Rural Population
• Socioeconomic Factors
• Triatoma