OBJECTIVE: To evaluate the residual insecticidal activity of the PermaNet(®) curtains on Aedes aegypti after 1 year of use in Thai households and to assess the influence of sun and dust exposure, washing practices and detergent use. METHODS: We sampled UV-protected PermaNet(®) curtains made of a long-lasting deltamethrin-[55 mg/m(2)] treated polyester netting, before (10 curtains) and after 8 (10 curtains) and 12 months (66 curtains) of household use in a field site in Chon Buri, Thailand. We assessed the residual insecticidal activity of the curtains by standard WHO bioassay, using a deltamethrin-susceptible insectarium Aedes aegypti strain. RESULTS: Mosquito mortality was 100% before distribution, 100% at 8 months and 98.2% (95% CI 97.9-98.5) at 12 months of use. Sunlight, hand-washing and detergent use had no effect on the residual insecticidal activity after 12 months. However, the mosquito survival rate increased by a factor of 6.4 (95% CI 3.5-11.8) on machine-washed curtains and by a factor of 2.0 (95% CI 1.4-2.9) on curtains not covered by dust. CONCLUSION: The residual insecticidal activity of PermaNet® curtains remains high after 12 months use under field conditions.
OBJECTIVE: To evaluate the residual insecticidal activity of the PermaNet(®) curtains on Aedes aegypti after 1 year of use in Thai households and to assess the influence of sun and dust exposure, washing practices and detergent use. METHODS: We sampled UV-protected PermaNet(®) curtains made of a long-lasting deltamethrin-[55 mg/m(2)] treated polyester netting, before (10 curtains) and after 8 (10 curtains) and 12 months (66 curtains) of household use in a field site in Chon Buri, Thailand. We assessed the residual insecticidal activity of the curtains by standard WHO bioassay, using a deltamethrin-susceptible insectarium Aedes aegypti strain. RESULTS: Mosquito mortality was 100% before distribution, 100% at 8 months and 98.2% (95% CI 97.9-98.5) at 12 months of use. Sunlight, hand-washing and detergent use had no effect on the residual insecticidal activity after 12 months. However, the mosquito survival rate increased by a factor of 6.4 (95% CI 3.5-11.8) on machine-washed curtains and by a factor of 2.0 (95% CI 1.4-2.9) on curtains not covered by dust. CONCLUSION: The residual insecticidal activity of PermaNet® curtains remains high after 12 months use under field conditions.
Authors: Alberto Baly; Steffen Flessa; Marilys Cote; Thirapong Thiramanus; Veerle Vanlerberghe; Elci Villegas; Somchai Jirarojwatana; Patrick Van der Stuyft Journal: Am J Trop Med Hyg Date: 2011-05 Impact factor: 2.345
Authors: Folashade B Agusto; Sara Y Del Valle; Kbenesh W Blayneh; Calistus N Ngonghala; Maria J Goncalves; Nianpeng Li; Ruijun Zhao; Hongfei Gong Journal: J Theor Biol Date: 2012-12-13 Impact factor: 2.691
Authors: María Alba Loroño-Pino; Julián E García-Rejón; Carlos Machain-Williams; Salvador Gomez-Carro; Guadalupe Nuñez-Ayala; Maria del Rosario Nájera-Vázquez; Arturo Losoya; Lyla Aguilar; Karla Saavedra-Rodriguez; Saul Lozano-Fuentes; Meaghan K Beaty; William C Black; Thomas J Keefe; Lars Eisen; Barry J Beaty Journal: Am J Trop Med Hyg Date: 2013-06-03 Impact factor: 2.345
Authors: Veerle Vanlerberghe; Elci Villegas; Milagros Oviedo; Alberto Baly; Audrey Lenhart; P J McCall; Patrick Van der Stuyft Journal: PLoS Negl Trop Dis Date: 2011-03-29