A resurgence of malaria in Senegal reflects both the increasing resistance of malaria-transmitting mosquitoes to a commonly used insecticide and the increasing susceptibility of older children and adults to disease (Trape J-F et al. Lancet Infect Dis. doi:http://dx.doi.org/10.1016/S1473-3099(11)70194-3).
In a longitudinal study in Dielmo village in Senegal between January 2007 and December 2010, Senegalese and French investigators monitored the inhabitants for fever and treated malaria attacks with artemisinin-combination therapies and also distributed bed nets treated with deltamethrin.
Friedrich MJ. Insecticide Resistance. JAMA. 2011;306(15):1644. doi:10.1001/jama.2011.1485