Figure 2

PfMSP6 allele distribution changes significantly over consecutive transmission seasons. Distribution of the K1- and 3D7-like allele frequencies across the 2003-2006 transmission seasons showed a significant decline in K1-allele frequency between 2003/2004 and 2005/2006. Each bar represents the percentage of each allele type detected in n samples for the given year, and * denotes significant differences between paired years with p = 0.0001 in χ² analysis.