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Cumulative cases reported in SECURE-SCD from March 2020 to March 2022.Blue and orange lines represent number of cumulative cases reported to the SECURE-SCD from March 2020 to March 2022 in children and adults by month. Yellow boxes show timeline of the eligibility of the different age groups for the vaccine since approval in December 2020. Blue boxes represent the timeline of the questions added to the SECURE-SCD report form.
