Fig. 3From: Combining next-generation indoor residual spraying and drug-based malaria control strategies: observational evidence of a combined effect in MaliThe monthly protective effect of each intervention package. The protective effect is the reduced incidence observed in each district as a percentage of the total incidence observed in the non-intervention comparator districts. Results are shown for (a) the total all-ages population and (b) the population under age 5Back to article page