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A new tactic for triatoma infestans control: fabrics impregnated with beta-cypermethrin

dc.contributor.authorWood, Edgardoes_ES
dc.contributor.authorA. de Licastro, Susanaes_ES
dc.contributor.authorCasabé, Normaes_ES
dc.contributor.authorPicollo, María Inéses_ES
dc.contributor.authorAlzogaray, Raúles_ES
dc.contributor.authorZerba, Eduardo Nicoláses_ES
dc.date.accessioned2015
dc.date.available2015
dc.date.issued1999es_ES
dc.identifier.citationWood, Edgardo,A. de Licastro, Susana,Casabé, Norma,Picollo, María Inés,Alzogaray, Raúl,Zerba, Eduardo Nicolás (1999) A new tactic for triatoma infestans control: fabrics impregnated with beta-cypermethrin. Rev Panam Salud Publica;6(1) -,jul. 1999. Retrieved from http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49891999000600001&lng=pt&nrm=isoen_US
dc.identifier.urihttp://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49891999000600001&lng=pt&nrm=isoes_ES
dc.identifier.urihttps://iris.paho.org/handle/10665.2/8924
dc.format.extenttabes_ES
dc.relation.ispartofseriesRev Panam Salud Publica;6(1),jul. 1999es_ES
dc.subjectTriatomaes_ES
dc.subjectPiretrinases_ES
dc.subjectDoença de Chagaspt_BR
dc.subjectArgentinaes_ES
dc.titleA new tactic for triatoma infestans control: fabrics impregnated with beta-cypermethrinen_US
dc.typeJournal articlesen_US
dc.rights.holderPan American Health Organizationen_US
dc.description.notesTriatoma infestans is the most important vector of Chagas' disease in Argentina. Experiences from Argentine national campaigns have shown indoor spraying to control triatomine bugs is both expensive and difficult. An alternative control method may be the use of pyrethroid-impregnated fabrics (PIFs), which could be both a practical and cheap complement to conventional control measures. In this study, a formulation of emulsifiable concentrate of B-cypermethrin [a-cyano-3-phenoxybenzyl-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxilate] pyrethroid was used to impregnate different fabrics. The fabrics were then tested for their efficacy and persistence in killing Triatoma infestans. Insects attempting to penetrate or grasp the fabric in search of blood meals were poisoned by the exposure to the absorbed pyrethroid. Laboratory bioassays showed that the insecticidal effect of the PIFs with a dosage of 0.2 g/m2 lasted longer on wool than on cotton or rayon. Eight months after impregnation, a residual efficacy of 100 per cent was found for wool, 80 per cent for rayon-cotton fabrics, and 50 per cent for rayon-polyester fabrics. In addition, b-cypermethrin-impregnated fabrics showed a better repellency effect than did fabrics impregnated with either deltamethrin or cypermethrin. For field trials, fabrics were impregnated either in the laboratory or "in situ" at a dosage of 1 g b-cypermethrin/m2 and then dried. The PIFs were placed inside homes, either under the roof or under the bed mattress. The field trials showed the PIF approach to be very effective in keeping dwellings free of triatomine bugs for at least one year and found a high degree of acceptability among the houses' residentsen_US


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