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Table 5 Percentage of subjects with increasing antibody titer 28 days post vaccination

From: A novel Vi-diphtheria toxoid typhoid conjugate vaccine is safe and can induce immunogenicity in healthy Indonesian children 2–11 years: a phase II preliminary report

Group Increment of antibody titers V1 to V2 p RR (95%CI)
<  4-fold ≥ 4-fold
Vi-DT 0 100% 0.014 0.930 (0.881–0.981)
Vi-PS 7% 93%