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Field Evaluation of a Spatial Repellent Emanation Vest for Personal Protection Against Outdoor Biting Mosquitoes.
Sukkanon, Chutipong; Tisgratog, Rungarun; Muenworn, Vithee; Bangs, Michael J; Hii, Jeffrey; Chareonviriyaphap, Theeraphap.
Afiliación
  • Sukkanon C; Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, Thailand.
  • Tisgratog R; Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, Thailand.
  • Muenworn V; Department of Entomology and Plant Pathology, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand.
  • Bangs MJ; Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, Thailand.
  • Hii J; Public Health & Malaria Control, PT Freeport Indonesia/International SOS, Kuala Kencana, Papua, Indonesia.
  • Chareonviriyaphap T; Malaria Consortium Asia Regional Office, Faculty of Tropical Medicine, Mahidol University Bangkok, Bangkok, Thailand.
J Med Entomol ; 58(2): 756-766, 2021 03 12.
Article en En | MEDLINE | ID: mdl-33078838
Exophilic vectors are an important contributor to residual malaria transmission. Wearable spatial repellents (SR) can potentially provide personal protection in early evening hours before people retire indoors. An SR prototype for passive delivery of transfluthrin (TFT) for protecting humans against nocturnal mosquitoes in Kanchanaburi, western Thailand, is evaluated. A plastic polyethylene terephthalate (PET) sheet (676 cm2) treated with 55-mg TFT (TFT-PET), attached to the back of short-sleeve vest worn by human collector, was evaluated under semifield and outdoor conditions. Field-caught, nonblood-fed female Anopheles minimus s.l. were released in a 40 m length, semifield screened enclosure. Two collectors positioned at opposite ends conducted 12-h human-landing collections (HLC). The outdoor experiment was conducted between treatments among four collectors at four equidistant positions who performed HLC. Both trials were conducted for 30 consecutive nights. TFT-PET provided 67% greater protection (P < 0.001) for 12 h compared with unprotected control, a threefold reduction in the attack. In outdoor trials, TFT-PET provided only 16% protection against An. harrisoni Harbach & Manguin (Diptera: Culicidae) compared with unprotected collector (P = 0.0213). The TFT-PET vest reduced nonanophelines landing by 1.4-fold compared with the PET control with a 29% protective efficacy. These findings suggest that TFT-PET had diminished protective efficacy in an open field environment. Nonetheless, the concept of a wearable TFT emanatory device has the potential for protecting against outdoor biting mosquitoes. Further development of portable SR tools is required, active ingredient selection and dose optimization, and more suitable device design and materials for advancing product feasibility.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ciclopropanos / Fluorobencenos / Repelentes de Insectos / Anopheles Límite: Animals / Humans País/Región como asunto: Asia Idioma: En Revista: J Med Entomol Año: 2021 Tipo del documento: Article País de afiliación: Tailandia Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ciclopropanos / Fluorobencenos / Repelentes de Insectos / Anopheles Límite: Animals / Humans País/Región como asunto: Asia Idioma: En Revista: J Med Entomol Año: 2021 Tipo del documento: Article País de afiliación: Tailandia Pais de publicación: Reino Unido