Fig. 1From: Proportional decline of Anopheles quadriannulatus and increased contribution of An. arabiensis to the An. gambiae complex following introduction of indoor residual spraying with pirimiphos-methyl: an observational, retrospective secondary analysis of pre-existing data from south-east ZambiaSibling species proportional composition of the An. gambiae complex over time in Chisobe village. The error bars around the observations represent the 95% confidence intervals for the mean proportion accounted for by that speciesBack to article page