Fig. 5

The proportion (%) of seropositive anti-toxin levels for diphtheria, tetanus, and pertussis across the study population enrolled in this study. The GMT is shown as red dots. Diphtheria toxoid antibody measurements were negative (white), 0.01 to < 0.1 IU/ml (light blue), 0.1 to < 1 IU/ml (blue), and > 1 IU/ml (dark blue). Tetanus toxoid antibody measurements were negative (white), 0.01 to < 0.1 IU/ml (light blue), 0.1 to < 1 IU/ml (blue), and 1 to < 5 IU/ml (dark blue), and > 5 IU/ml (black). Pertussis toxin antibody measurements were negative (white), 5 to < 40 IU/ml (light blue), 40 to < 100 IU/ml (blue), and > 100 IU/ml (dark blue)