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A toddler in Leeds died from lead poisoning. Laura Hughes speaks to doctors in the UK to learn what must be done to prevent it from happening again. She learns that truly addressing the problem will be a massive undertaking. It would require a complete overhaul of the housing, environmental and food standards systems. But first, we need to find out where the lead is.

Learn more about Untold: Toxic Legacy.

For more information on how to live safely with lead, please visit the LEAPP Alliance website.

Read a transcript of this episode on FT.com

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