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Table 2 Results of bioassays conducted on Peruvian Aedes aegypti

From: Susceptibility to insecticides and resistance mechanisms in three populations of Aedes aegypti from Peru

Insecticide Population No. tested % Mortalitya 95% CI Resistance status
DDT Chosica 299 0 R
Punchana 300 0 R
Piura 301 13.3 ± 9.2 7.4–19.1 R
Deltamethrin Chosica 294 99.3 ± 1.6 98.3–100.3 S
Punchana 298 51.3 ± 2.9 43.2–59.6 R
Piura 604 74.7 ± 0.4 70.2–79 R
Cypermethrin Chosica 301 52.2 ± 0.1 39.8–65.3 R
Punchana 302 2.3 ± 2.7 0.6–4.0 R
Piura nt nt nt
Alpha-cypermethrin Chosica 308 72.4 ± 3.4 63.6–80.6 R
Punchana 295 4.7 ± 5.0 1.6–8.0 R
Piura nt nt nt
Lambda-cyhalothrin Chosica 290 96.9 ± 5.2 93.6–100.2 RV
Punchana 301 24.3 ± 5.5 20.8–27.8 R
Piura nt nt nt
Etofenprox Chosica 302 8.3 ± 10.3 1.7–14.8 R
Punchana 300 0.3 ± 1.2 -0.4–1.1 R
Piura nt nt nt
Permethrin Chosica nt nt nt
Punchana nt nt nt
Piura 302 12.9 ± 6.3 8.9–16.9 R
Malathion Chosica 301 94.7 ± 4.3 92–97.4 RV
Punchana 304 99.0 ± 1.8 97.9–100.1 S
Piura 586 98.8 ± 2.2 97.8–99.7 S
Fenitrothion Chosica 303 36.6 ± 7.9 31.7–41.7 R
Punchana 301 9.0 ± 6.9 4.7–13.5 R
Piura 309 5.8 ± 5.0 2.8–9.1 R
Pirimiphos-methyl Chosica 295 84.1 ± 7.1 79.57–8.54 R
Punchana 301 2.3 ± 2.7 0.6–4.0 R
Piura 294 39.5 ± 9.2 33.7–45.4 R
  1. aValues are the mean ± SD. A minimum of three assays were performed per insecticide at each site
  2. Abbreviations: CI, confidence interval; nt, not tested; R, resistant; S, susceptible; RV, resistance to be verified