McDonald’s says E. Coli outbreak likely linked to Colorado Springs facility, says they will no longer source onions from there KKTVWhere People Got Sick: E. coli Outbreak, McDonald's Quarter Pounders - October 22, 2024 CDCMcDonald's E. coli outbreak follows other listeria, salmonella recalls: What to know USA TODAYE. coli cases linked to McDonald’s Quarter Pounders rises to 75, federal agencies say CNN