Figure 3From: Drug coverage in treatment of malaria and the consequences for resistance evolution - evidence from the use of sulphadoxine/pyrimethamineAllele frequency changes at dhps in Rufiji (A), and Kilombero/Ulanga (B). The sensitive allele (dotted line with diamonds), the double mutant A437G + K540E allele (solid line with triangles), and single S436A mutant (dashed line with squares).Back to article page