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Table 4 Frequency of Knockdown resistance allele in relation to phenotypes determined by WHO susceptibility bioassay in Anopheles gambiae s.s.

From: Status of insecticide resistance in malaria vectors in Kwale County, Coastal Kenya

Bioassay phenotype n L1014S kdr genotype F (kdr)
Resistant 78 0 1 77 0.0064
Susceptible 169 3 1 165 0.0207
  1. R represents the resistant allele, S represents the wild type/susceptible allele, n is the total number tested and F is the frequency of the kdr allele. The resistant bioassay phenotype refers to mosquitoes that were alive 24 h post-exposure to either deltamethrin or permethrin while susceptible phenotype refers to those that were dead