McDonald’s shares fall after CDC says E. coli outbreak linked to Quarter Pounders CNBCCDC warns of deadly multistate E. coli outbreak tied to McDonald’s Quarter Pounders CNNMcDonald’s Quarter Pounders linked to E. coli outbreak, CDC says AxiosWhere People Got Sick: E. coli Outbreak, McDonald’s Quarter Pounders – October 22, 2024 CDCMcDonald’s hamburgers linked to deadly E. coli outbreak in the US BBC.com