Figure 6From: Immuno-epidemiology of human Schistosoma haematobiuminfection: preferential IgG3 antibody responsiveness to a recombinant antigen dependent on age and parasite burdenCorrelation between infection intensity (log10 (x+1) transformed) and antibody levels (square root transformed). r is the correlation coefficient and p values are also given. The youngest age group (7–10) is excluded from the analysis as they are producing very little amounts ofanti-Sh13IgG3. a) Age group where infection levels peak (11–12 yearsold). b) Age group where infection levels are declining (13–16 years old). c) Age group where infection levels are lowest (17–18 years old).Back to article page