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Number of subjects vaccinated during the study using dose 1 and dose 2, by age category (pediatric, 6 months–17 years; adult, 18–65 years; older adult, > 65 years), country, and per ISO week (40–52). Two colors are used for Spain, where some pediatric subjects received two vaccination doses. ISO wk International Standards Organization week, mo month, N total number of subjects in category, y year
