Volume 13, Number 2—February 2007
Research
Reduced Efficacy of Insecticide-treated Nets and Indoor Residual Spraying for Malaria Control in Pyrethroid Resistance Area, Benin
Raphael N’Guessan*, Vincent Corbel†, Martin Akogbéto‡§, and Mark Rowland
Table 5
Efficacy of lambdacyalothrin-treated filter papers* to Anopheles gambiae from Ladji, Vkper (fixed for kdr allele) and Kisumu (susceptible) strains†
| Lambdacyalothrin 0.05% (18 mg/m2)–treated filter paper bioassays | |||
|---|---|---|---|
| Strains | Slope (SE) | LT50 (95% CI) | LT50 ratio |
| Ladji | 2.1 (0.2) | 10.9 (7.2–14.8) | |
| Vkper | 2.1 (0.2) | 14.2 (3.6–25.3) | 1.3 (1.0–1.6) |
| Kisumu | <1 | ||
*In World Health Organization kits.
†As determined by using probit analysis. kdr, knockdown; SE, standard error; CI, confidence interval; LT50 is the exposure time in min to kill 50%.
