At least 75 people are sickened as the deadly McDonald’s E. coli outbreak expands The Associated PressE. coli Outbreak Linked to McDonald’s Quarter Pounders CDCTaco Bell, Pizza Hut, and KFC Recall Onions Linked to Deadly McDonald's E. Coli Outbreak AllrecipesE. coli cases linked to McDonald’s Quarter Pounders rises to 75, federal agencies say CNN