PLoS Neglected Tropical Diseases (2017) 11 (6 - e0005656)

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Gonzalo M. Vazquez-Prokopec, Anuar Medina-Barreiro, Azael Che-Mendoza, Felipe Dzul-Manzanilla, Fabian Correa-Morales, Guillermo Guillermo-May, Wilbert Bibiano-Marín, Valentín Uc-Puc, Eduardo Geded-Moreno, José Vadillo-Sánchez, Jorge Palacio-Vargas, Scott A. Ritchie, Audrey Lenhart and Pablo Manrique-Saide (2017)
Deltamethrin resistance in Aedes aegypti results in treatment failure in Merida, Mexico
PLoS Neglected Tropical Diseases 11 (6 - e0005656)
Abstract: The operational impact of deltamethrin resistance on the efficacy of indoor insecticide applications to control Aedes aegypti was evaluated in Merida, Mexico. A randomized controlled trial quantified the efficacy of indoor residual spraying (IRS) against adult Ae. aegypti in houses treated with either deltamethrin (to which local Ae. aegypti expressed a high degree of resistance) or bendiocarb (to which local Ae. aegypti were fully susceptible) as compared to untreated control houses. All adult Ae. aegypti infestation indices during 3 months post-spraying were significantly lower in houses treated with bendiocarb compared to untreated houses (odds ratio <0.75; incidence rate ratio < 0.65) whereas no statistically significant difference was detected between the untreated and the deltamethrin-treated houses. On average, bendiocarb spraying reduced Ae. aegypti abundance by 60% during a 3-month period. Results demonstrate that vector control efficacy can be significantly compromised when the insecticide resistance status of Ae. aegypti populations is not taken into consideration.
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Full text of article
Database assignments for author(s): Gonzalo M. Vazquez-Prokopec, Scott A. Ritchie

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Aedes aegypti Mexico