A Colorado farm has recalled onions it may have sold to McDonald’s before the fast-food chain’s E. coli outbreak, which killed one person in the state and sickened at least 49 people nationwide. Taylor Farms, which is based in California but also grows vegetables in Colorado, issued a recall notice Wednesday for whole and diced yellow onions because of possible E.

coli contamination. McDonald’s stated it had purchased onions from Taylor Farms and distributed them to locations in areas affected by the 10-state outbreak, but distributor U.S.

Foods told a different story, saying the recalled vegetables never went to the fast-food chain. Taylor Farms has yet to comment on the allegations, and the U.S.

Department of Agriculture declined to specify what farms and other facilities it was investigating. Federal officials are investigating slivered onions and quarter-pound beef patties as possible sources of the outbreak. McDonald’s took Quarter Pounders off the menu in Colorado and other affected states, because most people who completed interviews about the foods they ate said they’d had that type of hamburger in the days before they got sick.

According to the Centers for Disease Control and Prevention, at least 26 of the 49 people who have gotten sick nationwide after eating at McDonald’s live in Colorado. Ten people have needed hospital care. The one fatality was an unidentified person in Mesa County who had pre-existing health conditions.

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