Fig. 2From: Phenotypic and genotypic monitoring of Schistosoma mansoni in Tanzanian schoolchildren five years into a preventative chemotherapy national control programmeMean (± 95% confidence intervals) allelic richness (a) and expected (b) and observed heterozygosity (c) for the parasite infrapopulations of individual children, adjusted for child age and sex and miracidial sample size, at two schools near Lake Victoria in 2005, 2006 and 2010Back to article page