This is what I found on NPR.ORG:

The Arizona-based JBS Tolleson processing plant initially recalled about 3,500 tons of potentially contaminated beef in October. JBS, the top global meatpacker that owns the plant, still maintains the move ensured all of the affected product had already been removed from store shelves.

But the U.S. Agriculture Department’s Food Safety and Inspection Service says investigators identified at least three patients believed to have been sickened by the company’s beef that was not included in the October recall.

JBS says it made a “cautious decision” to expand the recall because some potentially contaminated meat could remain frozen in consumers’ homes. The expanded recall covers raw beef packaged between July 26, 2018, and Sept. 7, 2018, bearing “EST. 267” within the USDA inspection mark

Information provided by NPR.ORG.

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