USA – USDA Starts Testing Ground Beef For Big Six E. coli Strains, O157

Food Poisoning Bulletin

The USDA’s Food Safety and Inspection Service (FSIS) has started testing ground beef, bench trim, and other raw ground beef components for Shiga toxin-producing E. coli strains (STEC) that are adulterants. They include the “Big Six” O26, O45, O103, O111, O121, and O145 as well as O157. The testing started on February 1, 2023. This new program was announced in the Federal Register on June 4, 2020.

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