The outbreak is not over yet.

The US Centers for Disease Control and Prevention says more cases linked to McDonald's burgers have spread to 13 states, as officials race to determine whether the outbreak was caused by the meat or onions. The number of people sickened by the McDonald's Quarter Pounder burgers in the United States continues to rise, with the number of people sickened by E. coli bacteria rising to 75 in 13 states สล็อต