Fig. 3.

Antibody concentrations against the recombinant pneumococcal surface protein A (PspA) and PsaA antigens in acute and convalescent sera from the patients with pneumococcal disease. Box plot graphs: the boundary of the box closest to zero indicates the 25th percentile, a line within the box marks the median, and the boundary of the box furthest from zero indicates the 75th percentile. Whiskers above and below the box indicate the 95th and 5th percentiles. The outlining dots represent the values out of the 95th and 5th percentiles. Statistical results: *P < 0·05 and **P < 0·01.