Ninety people in 13 states have been infected in a deadly E. coli outbreak linked to McDonald's Quarter Pounders, the Centers for Disease Control and Prevention said Wednesday, as it continues to investigate the source of the spread.
Before Wednesday, the CDC last gave an update on the outbreak on Friday, when the agency said it had 75 cases in 13 states.
Fresh slivered onions served on Quarter Pounders and other menu items at McDonald's are "the likely source of this outbreak," the CDC said on its website on Wednesday.
The CDC believes the risk to the public is "very low" due to the efforts from McDonald's and Taylor Farms.
Quarter Pounder hamburgers are a core menu item for McDonald's, raking in billions of dollars each year.
Organizations:
Centers for Disease Control, Prevention, CDC, U.S
Locations:
Colorado, McDonald's, Colorado , Kansas, Wyoming, Idaho , Iowa , Missouri, Montana , Nebraska , Nevada , New Mexico , Oklahoma, Utah