<p>For each child, the change in IgG level from December 2009 to May 2010 was calculated for each antigen (A, AMA1-3D7; B, MSP1-3D7; C, EBA175-3D7; D, MSP2-3D7). All responses below the limit of detection (44 ELISA units) were assigned a value of 22 ELISA units. Median and interquartile range are shown. Positive values represent increases in IgG levels at the end of the dry season. Changes in IgG levels were not significantly different among the three Hb types for any antigen (p>0.05 by Kruskal-Wallis tests).</p
