More cases reported in McDonald’s E. coli outbreak

Officials say they expect the real number to be higher and continue to grow. Some infected patients may recover without testing, and it can take three to four weeks to confirm whether a case is part of the outbreak.

The CDC reiterated that slivered onions and beef patties used in McDonald’s Quarter Pounder burgers are under investigation.

McDonald’s executives said in a briefing on Wednesday that the initial investigation points to contaminated ingredients, likely slivered onions, rather than the mishandling or improper preparation of food.

Taylor Farms, McDonald’s regional supplier of slivered onions, has issued a recall of its product, which has affected several other restaurant brands.

McDonald’s also said the potentially contaminated ingredients have been pulled from its restaurants, and Quarter Pounders are off the menu in impacted areas during the investigation.

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