Cheesecake FactoryABC7 Chicago reports that five customers became sick after eating at the Cheesecake Factory at Woodfield Mall in Schaumburg Thursday night. Officials said E. coli is not to blame. The business travelers, who were in town from Okalahoma, ordered spinach and cheese dip. They were taken to the hospital and treated and released. The Cook County Health Department is testing the Cheesecake Factory’s spinach dish. As a precaution, the restaurant temporarily removed the dish from its menu.