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The impact of indoor residual spraying of deltamethrin on dengue vector populations in the Peruvian Amazon.
Paredes-Esquivel, Claudia; Lenhart, Audrey; del Río, Ricardo; Leza, M M; Estrugo, M; Chalco, Enrique; Casanova, Wilma; Miranda, Miguel Ángel.
Afiliação
  • Paredes-Esquivel C; Lab. Zoology, University of the Balearic Islands, Ctra de Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain. Electronic address: claudia.paredes@uib.es.
  • Lenhart A; U.S. Centers for Disease Control and Prevention, Atlanta, USA.
  • del Río R; Lab. Zoology, University of the Balearic Islands, Ctra de Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain.
  • Leza MM; Lab. Zoology, University of the Balearic Islands, Ctra de Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain.
  • Estrugo M; Lab. Zoology, University of the Balearic Islands, Ctra de Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain.
  • Chalco E; Dirección Regional de Salud Loreto, Ministerio de Salud del Perú, Peru.
  • Casanova W; Dirección Regional de Salud Loreto, Ministerio de Salud del Perú, Peru.
  • Miranda MÁ; Lab. Zoology, University of the Balearic Islands, Ctra de Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain.
Acta Trop ; 154: 139-44, 2016 Feb.
Article em En | MEDLINE | ID: mdl-26571068
Dengue is an important public health problem in the Amazon area of Peru, resulting in significant morbidity each year. As in other areas of the world, ultra-low volume (ULV) application of insecticides is the main strategy to reduce adult populations of the dengue vector Aedes aegypti, despite growing evidence of its limitations as a single control method. This study investigated the efficacy of deltamethrin S.C. applied through indoor residual spraying (IRS) of dwellings in reducing A. aegypti populations. The residual effect of the insecticide was tested by monthly bioassays on the three most common indoor surfaces found in the Amazon area: painted wood, unpainted wood and brick. The results showed that in an area with moderate levels of A. aegypti infestation, IRS dramatically reduced all immature indices the first week after deltamethrin IRS application and the adult index from 18.5 to 3.1, four weeks after intervention (p<0.05). Even though housing conditions facilitated reinfestation with A. aegypti (100% of the houses have open roof eaves, 31.5% lack sewage systems, and 60.4% collected rain in open containers), indices remained low compared to baseline 16 weeks after insecticide application. Bioassays showed that deltamethrin S.C. caused mortalities >80% 8 weeks after application on all types of surfaces. The residual effect of the insecticide was greater on brick than on wooden walls (p<0.05). Our results demonstrate that IRS can have both an immediate and sustained effect on reducing adult and immature A. aegypti populations and should be considered as an adult mosquito control strategy by dengue vector control programs.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Piretrinas / Controle de Mosquitos / Materiais de Construção / Aedes / Habitação / Insetos Vetores / Inseticidas / Nitrilas Aspecto: Determinantes_sociais_saude Limite: Animals / Humans País/Região como assunto: America do sul / Peru Idioma: En Revista: Acta Trop Ano de publicação: 2016 Tipo de documento: Article País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Piretrinas / Controle de Mosquitos / Materiais de Construção / Aedes / Habitação / Insetos Vetores / Inseticidas / Nitrilas Aspecto: Determinantes_sociais_saude Limite: Animals / Humans País/Região como assunto: America do sul / Peru Idioma: En Revista: Acta Trop Ano de publicação: 2016 Tipo de documento: Article País de publicação: Holanda