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Seroconversion rate by vaccine group, age strata and follow-up time point – Immunogenicity Analysis Set. Seroconversion was defined as 4-fold rise in the anti-Vi IgG titer at week 4 as compared to baseline value. The bars represent the seroconversion rate by age group at different follow up time points; the error bars represent the 95% confidence interval for the point estimate of seroconversion.
