McDonald's is investing $100 million to bring customers back after E. coli outbreak

McDonald's is investing \$100 million to revitalize sales after an E. coli outbreak linked to onions on Quarter Pounders. The outbreak, traced back to a California supplier, sickened over 100 people across multiple states. While the CDC has declared the outbreak over, McDonald's is offering financial aid to affected franchises and has since resumed selling Quarter Pounders with onions nationwide.