Figure 2. Comparison of genetic diversity (expected heterozygosity) and polyclonality between 2005 and 2014 in western Kenya.

Values were averaged across populations in western Kenya (n=1 for lowland-2005; n=2 for highland-2005; n=3 for lowland-2014, n=2 for highland 2014) for each locus and then compared. Statistical significance of the difference in expected heterozygosity and proportion of polyclonal infections detected at matching loci from 2005 (pre-ITN scale-up) to 2014 (post-ITN scale-up) were assessed by Wilcoxon signed-rank test for the eight matching loci. In western lowland sites, compared to previously published expected heterozygosity values for parasites collected in 2005 (Zhong et al 2007), the mean value was lower in 2014 ($\underset{\_}{x}$ = 0.703) than in 2005 ($\underset{\_}{x}$ = 0.754).