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STEC O157:H7 — slivered onions (McDonald's Quarter Pounders, 2024)

closed-recalled STEC E. coli O157:H7 (O157:H7) slivered onions Taylor Farms processing facility, CO

First reported: 2024-09-26 · Data as of: 2024-12-19

clear

Buyer guidance for slivered onions from Taylor Farms processing facility, CO

What to do

  • Outbreak is closed.
  • If you froze Taylor Farms-supplied slivered onions from October 2024, discard them.

What we don't know yet: Whether the contamination source was upstream onion growers or the Taylor Farms processing facility.

CDC MMWR ↗FSIS Recall ↗

Summary

Multi-state outbreak of E. coli O157:H7 infections linked to slivered onions supplied to McDonald's restaurants via Taylor Farms. Initial hypothesis focused on the Quarter Pounder beef patties; traceback investigation redirected to a single onion processing facility. One death reported in Colorado.

Traceback chain

FDA traceback investigation. Honest gap nodes indicate steps where the public investigation has not yet disclosed operator names.

farm Multiple onion growers (TX, CA, ID) multi-state
processor Taylor Farms (Colorado) Salinas, CA facility ◼ 1 batch
distributor McDonald's distribution network national ◼ 1 batch
retailer McDonald's restaurants (14 states) national ◼ 1 batch

Known gaps: individual farm-level contamination not yet disclosed

Sources