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. 2021 May 17;12:2871. doi: 10.1038/s41467-021-23114-y

Fig. 1. Relative distribution of samples by IgG intervals and by country.

Fig. 1

IgG-PT (a), IgG-Dt (b) and IgG-TT (c). Proportion of pertussis seroprevalence divided in samples <0.85 IU/mL (yellow), 0.85 to <50 IU/mL (green), 50 to <100 IU/mL (blue) and ≥100 IU/mL (purple) and seroprotection against diphtheria and tetanus in <0.01 IU/mL (purple), 0.01 to <0.1 IU/mL (green) and ≥0.1 IU/mL (yellow) within the 18 countries. The bars sum up to 100%. Abbreviations of all participating countries and the number of samples included in the study are listed in Table 1.