Fig. 3From: Evaluation of piperonyl butoxide in enhancing the efficacy of pyrethroid insecticides against resistant Anopheles gambiae s.l. in GhanaTrends and prediction of the percentage increment in susceptibility of Anopheles gambiae s.l. against PBO + permethrin in relation to permethrin alone during 2015 and 2016 for both Southern and Northern sectors. Significant increment in susceptibility was observed with the addition of PBO (p < 0.001)Back to article page