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Geometric mean concentrations and 95% confidence intervals against tetanus and diphtheria antigens in investigational TdaP booster groups and licensed comparator group from day 1 up through day 365 post-vaccination. Footnote: CI, confidence interval; DT, diphtheria toxoid; GMC, geometric mean concentration; IU/mL, International Units per milliliter; n, maximum number of participants with available results, TT, tetanus toxoid; TdaP, tetanus diphtheria acellular pertussis.
