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. 2023 Sep 14;7(21):6751–6761. doi: 10.1182/bloodadvances.2022009643

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Figure 1. — IPD trends (A-D). IPD in children with SCD Hb type and reference population, by age group. Red dashed line: IPD incidence rate level in children aged ≥5 years with HbSS before PCV licensure, an age group that was not recommended to take penicillin prophylaxis.⁹^,¹⁰