DuPont Qualicon said this month that the US Department of Agriculture Food and Safety Inspection Service has approved the DuPont Qualicon BAX STEC assay for screening Shiga toxin-producing strains of Escherichia coli, or STEC.

In a letter to DuPont, the USDA FSIS stated it had no objection to DuPont's claim that its testing suite is comparable to the USDA FSIS reference method for detecting STEC.

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