Figure 1

Distribution of IgG and IgA titers according to time since infection (days). Titers were expressed in O.D.. Serum samples from IgM + HWs (black dots) and IgM--—HWs (gray dots) were grouped by time since infection (days) and compared by ANOVA test (significant values are shown under the X axis), followed by correction by the Bonferroni test (significant values shown as bars at the top of each figure). The Mann Whitney test was used to find differences between IgM + HWs titers versus IgM—HWs titers (discontinued lines at the top of each figure). Significant p value < 0.05.