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Laboratory evaluation of Fendona 6SC® treated bednets and Interceptor® long-lasting nets against Anopheles gambiae s.l. in Burkina Faso

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Abstract

Insecticide-treated bednets play a cornerstone role in the efforts to control malaria. Bednets entomological efficacy is the determinant factor of their use to control malaria. In this study, we compared under laboratory conditions, the efficacy of two long-lasting nets (PermaNet® versus Interceptor®) and two treatments kits K-O TAB® (deltamethrin) versus Fendona 6SC® (alpha-cypermethrin) against Anopheles gambiae s.l. malaria vectors. The efficacy of washed and unwashed bednets was assessed by contact bioassays using World Health Organization (WHO) cones. Three to five-days-old mosquitoes were exposed to the netting for 3 min; the median and 95 % knockdown time, the after 24 h mortality was recorded for each type of bednet. The mortality after 24 h was equivalent for the Fendona 6SC® treated bednets and the K-O TAB® treated bednets [79.4 % confidence limits (CL) (73.9–84.6) and 74 % CL (68.3–80.0), respectively]. However, the Fendona 6SC® treated bednets were superior in 50 % knockdown time to the K-O TAB® treated bednets [7.8 min, CL (6.5–9.0) and 15. 2 min, CL (14.0–16.4), respectively]. Washed Interceptor® and PermaNet® bednets showed similar efficacy in terms of 50 % knockdown times. Mortality after 24 h was similar from the fifth to the twentieth wash, but PermaNet® performed better than Interceptor® for the first four washes and for unwashed bednets. This study showed that Fendona 6SC® kit and the Interceptor® bednets have exhibited consistent comparable efficacy in the laboratory compared to the well known and in use K-O TAB® kit and PermaNet® bednets.

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Acknowledgments

The trial was partly funded by BASF South Africa (Pty.) Ltd., in the form of gratis supply of Interceptor® nets, Fendona 6SC sachets, untreated nets, and a nominal cost for consumables and travel for field visits. The sponsors did not participate in the study design or influence the results in any manner. We further express our gratitude to the study participants, particularly the field workers for their enthusiasm and dedication throughout the study duration. Thank you to Dr. Manas Sarkar for his support and advice when drafting the manuscript.

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Authors and Affiliations

  1. Centre National de Recherche et de Formation sur le Paludisme (CNRFP), BP 2208, Ouagadougou 01, Burkina Faso

    Athanase Badolo, Wamdaogo M. Guelbéogo, Alfred B. Tiono, Abdoulaye Traoré, N’Falé Sagnon & Sodiomon B. Sirima

  2. Laboratoire d’Entomologie Fondamentale et Appliquée, Université de Ouagadougou, BP 7021, Ouagadougou 03, Burkina Faso

    Athanase Badolo

  3. Groupe de Recherche Action en Santé, 06 BP 10248, Ouagadougou 01, Burkina Faso

    Abdoulaye Traoré & Sodiomon B. Sirima

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  1. Athanase Badolo
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  2. Wamdaogo M. Guelbéogo
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  3. Alfred B. Tiono
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  4. Abdoulaye Traoré
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  5. N’Falé Sagnon
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  6. Sodiomon B. Sirima
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Correspondence to Athanase Badolo.

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Badolo, A., Guelbéogo, W.M., Tiono, A.B. et al. Laboratory evaluation of Fendona 6SC® treated bednets and Interceptor® long-lasting nets against Anopheles gambiae s.l. in Burkina Faso. Parasitol Res 113, 1069–1075 (2014). https://doi.org/10.1007/s00436-013-3742-3

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