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Residual insecticidal activity of long-lasting deltamethrin-treated curtains after 1 year of household use for dengue control

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Abstract
To evaluate the residual insecticidal activity of the PermaNet (R) 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 (R) curtains made of a long-lasting deltamethrin-[55 mg/m2] 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 (R) curtains remains high after 12 months use under field conditions.
Keywords
vector control, VENEZUELA, insecticide-treated curtain, Thailand, Aedes aegypti, residual insecticidal activity, dengue, lutte antivectorielle, rideau traites a l''insecticide, Thailande, activite insecticide residuelle, control vectorial, Tailandia, mosquitera impregnada con insecticida, actividad insecticida residual, WATER CONTAINER COVERS, WASH-RESISTANCE, NETS, MOSQUITOS, VECTORS, TRIALS

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MLA
Vanlerberghe, V, Y Trongtokit, L Cremonini, et al. “Residual Insecticidal Activity of Long-lasting Deltamethrin-treated Curtains After 1 Year of Household Use for Dengue Control.” TROPICAL MEDICINE & INTERNATIONAL HEALTH 15.9 (2010): 1067–1071. Print.
APA
Vanlerberghe, V, Trongtokit, Y., Cremonini, L., Jirarojwatana, S., Apiwathnasorn, C., & Van Der Stuyft, P. (2010). Residual insecticidal activity of long-lasting deltamethrin-treated curtains after 1 year of household use for dengue control. TROPICAL MEDICINE & INTERNATIONAL HEALTH, 15(9), 1067–1071.
Chicago author-date
Vanlerberghe, V, Y Trongtokit, L Cremonini, S Jirarojwatana, C Apiwathnasorn, and Patrick Van Der Stuyft. 2010. “Residual Insecticidal Activity of Long-lasting Deltamethrin-treated Curtains After 1 Year of Household Use for Dengue Control.” Tropical Medicine & International Health 15 (9): 1067–1071.
Chicago author-date (all authors)
Vanlerberghe, V, Y Trongtokit, L Cremonini, S Jirarojwatana, C Apiwathnasorn, and Patrick Van Der Stuyft. 2010. “Residual Insecticidal Activity of Long-lasting Deltamethrin-treated Curtains After 1 Year of Household Use for Dengue Control.” Tropical Medicine & International Health 15 (9): 1067–1071.
Vancouver
1.
Vanlerberghe V, Trongtokit Y, Cremonini L, Jirarojwatana S, Apiwathnasorn C, Van Der Stuyft P. Residual insecticidal activity of long-lasting deltamethrin-treated curtains after 1 year of household use for dengue control. TROPICAL MEDICINE & INTERNATIONAL HEALTH. 2010;15(9):1067–71.
IEEE
[1]
V. Vanlerberghe, Y. Trongtokit, L. Cremonini, S. Jirarojwatana, C. Apiwathnasorn, and P. Van Der Stuyft, “Residual insecticidal activity of long-lasting deltamethrin-treated curtains after 1 year of household use for dengue control,” TROPICAL MEDICINE & INTERNATIONAL HEALTH, vol. 15, no. 9, pp. 1067–1071, 2010.
@article{1113880,
  abstract     = {To evaluate the residual insecticidal activity of the PermaNet (R) 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 (R) curtains made of a long-lasting deltamethrin-[55 mg/m2] 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 (R) curtains remains high after 12 months use under field conditions.},
  author       = {Vanlerberghe, V and Trongtokit, Y and Cremonini, L and Jirarojwatana, S and Apiwathnasorn, C and Van Der Stuyft, Patrick},
  issn         = {1360-2276},
  journal      = {TROPICAL MEDICINE & INTERNATIONAL HEALTH},
  keywords     = {vector control,VENEZUELA,insecticide-treated curtain,Thailand,Aedes aegypti,residual insecticidal activity,dengue,lutte antivectorielle,rideau traites a l''insecticide,Thailande,activite insecticide residuelle,control vectorial,Tailandia,mosquitera impregnada con insecticida,actividad insecticida residual,WATER CONTAINER COVERS,WASH-RESISTANCE,NETS,MOSQUITOS,VECTORS,TRIALS},
  language     = {eng},
  number       = {9},
  pages        = {1067--1071},
  title        = {Residual insecticidal activity of long-lasting deltamethrin-treated curtains after 1 year of household use for dengue control},
  url          = {http://dx.doi.org/10.1111/j.1365-3156.2010.02582.x},
  volume       = {15},
  year         = {2010},
}

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