(CNN)– McDonald’s held a call with investors about the E-coli outbreak keeping customers out of its restaurants. According to a company that tracks foot traffic to restaurants and retailers, visits to McDonald’s went down 10% nationwide last week, 33% in Colorado, where the outbreak was most prevalent. On Sunday, Oct. 27, the company said all the contaminated products related to the outbreak have been taken out of the supply chain and restaurants. McDonald’s says it will start selling the quarter pounders again in all of its restaurants this week. Categories: News Tags: e-coli outbreak, E. coli, McDonald’s