Figure 1.

IgG antibody responses to merozoite antigens (A) andP. falciparum(Pf) lysate (B). Seroprevalence is represented by bars as the % of responders; plasma levels are represented by dot plots, with horizontal lines indicating median values. Data from children with SM is shown as shaded bars/dots; data from children with UM is shown as open bars/dots. Results of matched comparisons are reported in the x axis as the number (%) of divergent pairs for IgG seroprevalence, and the median difference (inter-quartile range) of IgG levels between SM and UM. P-values were calculated using McNemar’s or Sign test. All comparisons were corrected by the Monte Carlo permutation test (1000 random permutations). Thresholds for seroprevalence (OD): MSP-1₁₉ = 0.560, EBA-175 = 0.628, AMA-1 = 0.578, DBLα = 0.489, P. falciparum lysate = 0.034. Median difference (inter-quartile range) of IgM levels against uninfected erythrocytes lysate between SM and UM = −0.01 [−0.03, 0.01], P = 0.175.