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Evolution of the percentage of children with elevated blood lead levels (EBLL), i.e., Pb in blood ≥ 5 µg/dL, from 2007 to 2018. All data are from the city of Philadelphia’s Childhood Lead Poisoning Surveillance Report (2019). The total number of children screened ranged from 35,456 (2014) to 39,146 (2010).
