In the dry season, the kdr frequency was significantly higher in Plasmodium falciparum-infected mosquitoes, indicating that mosquitoes bearing a kdr mutation have a better adult survival, hence a higher likelihood of becoming infectious.
American Journal of Tropical Medicine Hygiene, Vol 82: 4, pp. 566-573
Malaria Journal 2010, 9:83 (24 March 2010)
This study showed a widespread resistance to permethrin in An. gambiae populations from southern Benin, with a significant increase of kdr frequency compared to what was observed previously in Benin.