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E. coli

Beef Patties Test Negative for E. Coli at CDA Lab

On Tuesday, October 22, the Colorado Department of Agriculture (CDA) laboratories received multiple lots of McDonald’s brand fresh and frozen beef patties collected from various Colorado McDonald’s locations associated with the ongoing E. Coli investigation

The CDA Microbiology Laboratory analyzed dozens of subsamples from all the lots and all samples were found to be negative for E. coli. CDA has completed all beef testing and does not anticipate receiving further samples.