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Should pyrethroids be banned for Indoor Residual Spraying (IRS)?

Submitted by Bart Knols on May 20, 2010 - 11:41
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Today a new forum topic was launched by Drs Derek Charlwood and Erling Pedersen from DBL in Copenhagen. They argue that pyrethroids should no longer be used for indoor residual spraying and be reserved for use on bednets. What's your opinion?

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Evidence of multiple pyrethroid resistance mechanisms in the malaria vector Anopheles gambiae sensu stricto from Nigeria

Submitted by Bart Knols on October 25, 2009 - 17:39
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Author(s): 
T.S. Awolola, O.A. Oduola, C. Strode, L.L. Koekemoer, B. Brooke, H. Ranson
Reference: 
Transactions of the Royal Society of Tropical Medicine and Hygiene, Volume 103, Issue 11, November 2009, Pages 1139-1145, doi:10.1016/j.trstmh.2008.08.021
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awololas@hotmail.com

 Pyrethroid insecticide resistance in Anopheles gambiae sensu stricto is a major concern to malaria vector control programmes. Resistance is mainly due to target-site insensitivity arising from a single point mutation, often referred to as knockdown resistance (kdr). Metabolic-based resistance mechanisms have also been implicated in pyrethroid resistance in East Africa and are currently being investigated in West Africa. Here we report the co-occurrence of both resistance mechanisms in a population of An. gambiae s.s. from Nigeria.

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Distribution of pyrethroid and DDT resistance and the L1014F kdr mutation in Anopheles gambiae s.l. from Burkina Faso (West Africa)

Submitted by Bart Knols on October 25, 2009 - 17:23
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Author(s): 
K.R. Dabiré, A. Diabaté, M. Namountougou, K.H. Toé, A. Ouari, P. Kengne, C. Bass, T. Baldet
Reference: 
Transactions of the Royal Society of Tropical Medicine and Hygiene, Volume 103, Issue 11, November 2009, Pages 1113-1120, doi:10.1016/j.trstmh.2009.01.008
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dabire_roch@hotmail.com

This study reports on the distribution of pyrethroid and DDT resistance and the L1014F knockdown resistance (kdr) mutation in Anopheles gambiae s.l. populations from 21 localities in three different climatic zones of Burkina Faso from August to October 2006. These results have practical significance for malaria vector control programs.

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