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Published online by Cambridge University Press: 23 February 2023
We report 2 outbreaks of genetically unrelated carbapenem-resistant New Delhi metallo-β-lactamase–producing Escherichia coli caused by contaminated duodenoscopes. Using endoscopes with disposable end caps, adherence to the manufacturer’s reprocessing instructions, routine audits, and manufacturer evaluation are critical in preventing such outbreaks.