Figure 2. IgA levels.

IgA responses specific for PT (A), FHA (B) and Prn (C) for each child in the on the x-axis presented group of children. The red horizontal bars indicate the GMC. The 10 and 28 days post-booster responses are indicated by the black circles and all other groups are indicate by open circles. * significant differences (p<0.05) are indicated for the healthy children between the presented age groups in similar primed children. Differences between infected children and the various groups of healthy wP and aP primed children are described in paragraph 3.1 of the results section.