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Prevention of Chagas disease vector-borne transmission mostly relies on the residual application of pyrethroid insecticide. Persistent or recurrent house infestation after insecticide spraying remains a serious challenge in remote, resource-poor rural areas where public health services face substantial constraints. Here we use generalized estimating equations and multimodel inference to model the fine-scale, time-lagged effects of a community-based vector surveillance-and-response strategy on house infestation and abundance of Triatoma infestans in four rural communities of the Argentine Chaco over a five-year period. Householders and community leaders were trained to detect triatomines and spray with insecticides their premises if infested. House infestation and vector abundance were consistently higher in peridomestic habitats than in human habitations (domiciles). Householders supplemented with sensor boxes detected infested domiciles (67%) more frequently than timed-manual searches (49%). Of all houses ever found to be infested by timed-manual searches, 76% were sprayed within six months upon detection. Domestic triatomine abundance was significantly related to house-level insecticide spraying during the previous year (inversely) and current peridomestic abundance (positively). Peridomestic triatomine abundance significantly increased with current domestic bug abundance and maximum peridomestic abundance during the previous year, and was unaffected by insecticide spraying. Our study provides new empirical evidence of the interconnection and flow between domestic and peridomestic populations of T. infestans under recurrent insecticide treatments, and supports targeting both habitats with appropriate tactics for longer-lasting, improved vector control. Community-directed efforts succeeded in controlling domestic infestations and interrupting domestic transmission, whereas persistent peridomestic infestations demand sustained control efforts to address domestic reinvasions. © 2018 Elsevier B.V.


Documento: Artículo
Título:Community-based surveillance and control of chagas disease vectors in remote rural areas of the Argentine Chaco: A five-year follow-up
Autor:Cecere, M.C.; Rodríguez-Planes, L.I.; Vazquez-Prokopec, G.M.; Kitron, U.; Gürtler, R.E.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Laboratory of Eco-Epidemiology, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires. Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
Department of Environmental Sciences, Emory University, Atlanta, GA 30322, United States
Palabras clave:Chagas disease; Community participation; Detection methods; Insecticide spraying; Surveillance; Vector control; insecticide; Chagas disease; detection method; disease control; disease transmission; disease vector; insecticide; local participation; rural area; survey; Argentina; Article; Chagas disease; community participation; controlled study; dengue; disease control; disease surveillance; disease transmission; evidence based practice; follow up; high risk population; household; human; infestation; nonhuman; pesticide spraying; rural population; species habitat; Triatoma infestans; vector control; Argentina; Chaco [Argentina]; Triatoma infestans
Página de inicio:108
Página de fin:115
Título revista:Acta Tropica
Título revista abreviado:Acta Trop.


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---------- APA ----------
Cecere, M.C., Rodríguez-Planes, L.I., Vazquez-Prokopec, G.M., Kitron, U. & Gürtler, R.E. (2019) . Community-based surveillance and control of chagas disease vectors in remote rural areas of the Argentine Chaco: A five-year follow-up. Acta Tropica, 191, 108-115.
---------- CHICAGO ----------
Cecere, M.C., Rodríguez-Planes, L.I., Vazquez-Prokopec, G.M., Kitron, U., Gürtler, R.E. "Community-based surveillance and control of chagas disease vectors in remote rural areas of the Argentine Chaco: A five-year follow-up" . Acta Tropica 191 (2019) : 108-115.
---------- MLA ----------
Cecere, M.C., Rodríguez-Planes, L.I., Vazquez-Prokopec, G.M., Kitron, U., Gürtler, R.E. "Community-based surveillance and control of chagas disease vectors in remote rural areas of the Argentine Chaco: A five-year follow-up" . Acta Tropica, vol. 191, 2019, pp. 108-115.
---------- VANCOUVER ----------
Cecere, M.C., Rodríguez-Planes, L.I., Vazquez-Prokopec, G.M., Kitron, U., Gürtler, R.E. Community-based surveillance and control of chagas disease vectors in remote rural areas of the Argentine Chaco: A five-year follow-up. Acta Trop. 2019;191:108-115.