Effectiveness of residual spraying of peridomestic ecotopes with deltamethrin and permethrin on Triatoma infestans in rural western Argentina: a district-wide randomized trial

dc.creatorGürtler, Ricardo E.
dc.creatorCanale, Delmi M
dc.creatorSpillmann, Cynthia
dc.creatorStariolo, Raúl L.
dc.creatorSalomón, Oscar Daniel
dc.creatorBlanco, Sonia B.
dc.creatorSegura, Elsa L.
dc.date2020-11-30T13:51:58Z
dc.date2020-11-30T13:51:58Z
dc.date2004-03
dc.date.accessioned2023-08-29T20:07:21Z
dc.date.available2023-08-29T20:07:21Z
dc.identifier0042-9686
dc.identifierhttp://sgc.anlis.gob.ar/handle/123456789/1766
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8519620
dc.descriptionFil: Gürtler, Ricardo E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Laboratorio de Ecología General; Argentina.
dc.descriptionFil: Canale, Delmi M. Coordinación Nacional de Control de Vectores; Argentina.
dc.descriptionFil: Spillmann, Cynthia. Coordinación Nacional de Control de Vectores; Argentina.
dc.descriptionFil: Stariolo, Raúl. Coordinación Nacional de Control de Vectores; Argentina.
dc.descriptionFil: Salomón, Oscar D. ANLIS Dr.C.G.Malbrán. Centro Nacional de Diagnóstico e Investigación de Endemo-Epidemias; Argentina.
dc.descriptionFil: Blanco, Sonia. Coordinación Nacional de Control de Vectores; Argentina.
dc.descriptionFil: Segura, Elsa L. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Parasitología; Argentina.
dc.descriptionObjective: To compare the effectiveness of a single residual spraying of pyrethroids on the occurrence and abundance of Triatoma infestans in peridomestic ecotopes in rural La Rioja. Methods: A total of 667 (32.8%) peridomestic sites positive for T. infestans in May 1999 were randomly assigned to treatment within each village, sprayed in December 1999, and reinspected in December 2000. Treatments included 2.5% suspension concentrate (SC) deltamethrin in water at 25 mg active ingredient (a.i.)/m(2) applied with: (a) manual compression sprayers (standard treatment) or (b) power sprayers; (c) 1.5% emulsifiable concentrate (EC) deltamethrin at 25 mg a.i./m(2); and (d) 10% EC cis-permethrin at 170 mg a.i./m(2). EC pyrethroids were diluted in soybean oil and applied with power sprayers. All habitations were sprayed with the standard treatment. Findings: The prevalence of T. infestans 1-year post-spraying was significantly lower in sites treated with SC deltamethrin applied with manual (24%) or power sprayers (31%) than in sites treated with EC deltamethrin (40%) or EC permethrin (53%). The relative odds of infestation and catch of T. infestans 1-year post-spraying significantly increased with the use of EC pyrethroids, the abundance of bugs per site before spraying, total surface, and host numbers. All insecticides had poor residual effects on wooden posts. Conclusion: Most of the infestations probably originated from triatomines that survived exposure to insecticides at each site. Despite the standard treatment proving to be the most effective, the current tactics and procedures fail to eliminate peridomestic populations of T. infestans in semiarid rural areas and need to be revised.
dc.formatpdf
dc.languageen
dc.publisherWorld Health Organization
dc.relation#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.relationdatasets
dc.relationBulletin of the World Health Organization
dc.rightsopen
dc.sourceBulletin of the World Health Organization 2004; 82(3):196-205
dc.subjectAnimales
dc.subjectArgentina
dc.subjectHumanos
dc.subjectControl de Insectos
dc.subjectInsecticidas
dc.subjectNitrilos
dc.subjectPermetrina
dc.subjectPiretrinas
dc.subjectPoblación Rural
dc.subjectTriatoma
dc.titleEffectiveness of residual spraying of peridomestic ecotopes with deltamethrin and permethrin on Triatoma infestans in rural western Argentina: a district-wide randomized trial
dc.typeArtículo


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