Background: Determining the insecticide resistance status of malaria vectors, particularly to insecticides used on mosquito nets, is important but is limited to a relatively small number of locations. We describe a simple assay that enables this information to be obtained over a much wider area.
Methods: The time to knockdown of mosquitoes in an insecticide-treated netting-covered metal frame cage were recorded. The shape of the curve of the proportion of knocked down mosquitoes provides information on resistance status.
Results: Resistant Anopheles funestus took significantly longer for knockdown than did susceptible Anopheles arabiensis.
Conclusions: This simple technique will enable a wide range of locations to be sampled, enhancing our understanding of the spread of resistance to pyrethroids.
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| http://dx.doi.org/10.1093/trstmh/trab140 | DOI Listing |
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