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Abstract:

The relative impact of two community-based vector control strategies on house infestation by Triatoma infestans and Trypanosoma cruzi infection in bugs, domestic dogs and cats was assessed in two neighboring rural areas comprising 40 small villages and 323 houses in one of the regions most endemic for Chagas disease in northern Argentina. The prevalence and abundance of domestic infestation were 1.5- and 6.5-fold higher, respectively, in the area under pulsed, non-supervised control actions operating under the guidelines of the National Vector Control Program (NCVP) than in the area under sustained, supervised surveillance carried out jointly by the UBA research team and NCVP. The prevalence of infestation and infection varied widely among village groups within each area. In the pulsed control area, the prevalence of infection in bugs, dogs and cats was two- to three-fold higher than in the area under sustained surveillance, most of the infected animals qualified as autochthonous cases, and evidence of recent transmission was observed. Infection was highly aggregated at the household level and fell close to the 80/20 rule. Using multiple logistic regression analysis clustered by household, infection in dogs was associated positively and significantly with variables reflecting local exposure to infected T. infestans, thus demonstrating weak performance of the vector surveillance system. For high-risk areas in the Gran Chaco region, interruption of vector-mediated domestic transmission of T. cruzi requires residual insecticide spraying that is more intense, of a higher quality and sustained in time, combined with community participation and environmental management measures. © 2007 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Impact of community-based vector control on house infestation and Trypanosoma cruzi infection in Triatoma infestans, dogs and cats in the Argentine Chaco
Autor:Cardinal, M.V.; Lauricella, M.A.; Marcet, P.L.; Orozco, M.M.; Kitron, U.; Gürtler, R.E.
Filiación:Laboratorio de Eco-Epidemiología, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (UBA), Buenos Aires, Argentina
Instituto Nacional de Parasitología Dr. Mario Fatala Chaben, Paseo Colón 568, 1063 Buenos Aires, Argentina
Division of Epidemiology and Preventive Medicine, Department of Veterinary Pathobiology, University of Illinois, Urbana-Champaign, 2001 South Lincoln Avenue, Urbana, IL 61802, United States
Palabras clave:Cats; Chagas disease; Dogs; Risk factors; Sentinel; Surveillance; Triatoma infestans; Trypanosoma cruzi; Vector control; insecticide; canid; Chagas disease; disease prevalence; disease vector; environmental management; insect; local participation; protozoan; regression analysis; risk factor; rural area; Argentina; article; cat; Chagas disease; controlled study; disease association; dog; domestic animal; endemic disease; female; health survey; high risk population; household; human; infestation; major clinical study; male; multivariate logistic regression analysis; parasite prevalence; parasite transmission; practice guideline; rural area; statistical analysis; Triatoma infestans; Trypanosoma cruzi; Animals; Argentina; Cat Diseases; Cats; Chagas Disease; Communicable Disease Control; Community-Acquired Infections; Dog Diseases; Dogs; Female; Humans; Insect Vectors; Male; Prevalence; Triatoma; Argentina; Gran Chaco; South America; Animalia; Canis familiaris; Triatoma infestans; Trypanosoma cruzi
Año:2007
Volumen:103
Número:3
Página de inicio:201
Página de fin:211
DOI: http://dx.doi.org/10.1016/j.actatropica.2007.06.007
Título revista:Acta Tropica
Título revista abreviado:Acta Trop.
ISSN:0001706X
CODEN:ACTRA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v103_n3_p201_Cardinal

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Citas:

---------- APA ----------
Cardinal, M.V., Lauricella, M.A., Marcet, P.L., Orozco, M.M., Kitron, U. & Gürtler, R.E. (2007) . Impact of community-based vector control on house infestation and Trypanosoma cruzi infection in Triatoma infestans, dogs and cats in the Argentine Chaco. Acta Tropica, 103(3), 201-211.
http://dx.doi.org/10.1016/j.actatropica.2007.06.007
---------- CHICAGO ----------
Cardinal, M.V., Lauricella, M.A., Marcet, P.L., Orozco, M.M., Kitron, U., Gürtler, R.E. "Impact of community-based vector control on house infestation and Trypanosoma cruzi infection in Triatoma infestans, dogs and cats in the Argentine Chaco" . Acta Tropica 103, no. 3 (2007) : 201-211.
http://dx.doi.org/10.1016/j.actatropica.2007.06.007
---------- MLA ----------
Cardinal, M.V., Lauricella, M.A., Marcet, P.L., Orozco, M.M., Kitron, U., Gürtler, R.E. "Impact of community-based vector control on house infestation and Trypanosoma cruzi infection in Triatoma infestans, dogs and cats in the Argentine Chaco" . Acta Tropica, vol. 103, no. 3, 2007, pp. 201-211.
http://dx.doi.org/10.1016/j.actatropica.2007.06.007
---------- VANCOUVER ----------
Cardinal, M.V., Lauricella, M.A., Marcet, P.L., Orozco, M.M., Kitron, U., Gürtler, R.E. Impact of community-based vector control on house infestation and Trypanosoma cruzi infection in Triatoma infestans, dogs and cats in the Argentine Chaco. Acta Trop. 2007;103(3):201-211.
http://dx.doi.org/10.1016/j.actatropica.2007.06.007