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    Organic Walnuts Sold in Bulk Bins Recalled Due to Risk of E. Coli

    Walnut halves and pieces were sold at hundreds of stores, including select Whole Foods and Natural Grocer stores. A dozen people have been sickened so far.

    Shelled whole walnuts and pieces of walnuts Photo: Shutterstock

    A dozen people have been sickened in an E. coli outbreak linked to organic walnut halves and pieces sold in bulk, according to the Centers for Disease Control and Prevention. The company that produced the nuts, Gibson Farms, issued a recall. 

    The recalled nuts were sold in co-op and natural food stores, including major chains such as select Natural Grocer and Whole Foods in 18 states: Arizona, Arkansas, California, Colorado, Hawaii, Idaho, Kansas, Louisiana, Montana, Nebraska, Nevada, New Mexico, Oregon, South Dakota, Texas, Utah, Washington, and Wyoming. The Food and Drug Administration posted a list of stores. (The list, the FDA says, is not comprehensive.) Some retailers may repackage bulk walnut halves and pieces into plastic clamshells or bags, according to the agency.

    The strain of E. coli, O157:H7, usually causes diarrhea (sometimes severe) but in some cases can cause kidney damage and death.

    Gibson Farms did not immediately respond to CR’s questions about how the walnuts became contaminated with E. coli. The company said in its announcement that an investigation is ongoing.  

    More food safety

    E. coli can get into water and soil from animal droppings, and could contaminate the soil or fertilizer used to grow the walnut trees, says James E. Rogers, PhD, director of food safety testing at CR. Walnuts are harvested by shaking the trees so the nuts fall to the ground, where they could have come into contact with tainted soil or water.  

    It’s not clear whether the walnuts have been removed from store shelves, and in its news release, Gibson Farms said it’s possible that other retailers not listed also received the nuts. “So if you live in one of the named states,” Rogers says, “you may want to hold off buying walnut halves and pieces from bulk bins at any store until the outbreak is over.” 

    At the same time, if you live in those states and you’ve recently purchased bulk organic walnut halves or pieces from any natural food or co-op grocer, throw them away, he says.

    Risks of E. Coli

    About 256,000 people are sickened with E. coli each year, and about 3,600 are hospitalized, according to the CDC. For most people, E. coli symptoms of diarrhea (sometimes bloody), stomach cramps, and vomiting occur up to nine days after exposure and resolve in about a week. See a doctor if symptoms do not resolve or are severe—for example, if you can’t keep water down or have a high fever. 

    The biggest concern is that the infection can cause a form of kidney failure that may be fatal. The people most susceptible to serious infection include children younger than 5, adults over age 65, and those with weakened immune systems due to having HIV or diabetes, or undergoing cancer treatments. 

    Consumers with questions about the recall can email Gibson Farms at foodsafety@gibsonfarmsinc.com or call 831-637-3512 between 11:30 a.m. and 7:40 p.m. ET Monday through Friday.


    Lisa L. Gill

    Lisa L. Gill is an award-winning investigative reporter. She has been at Consumer Reports since 2008, covering health and food safety—heavy metals in the food supply and foodborne illness—plus healthcare and prescription drug costs, medical debt, and credit scores. Lisa also testified before Congress and the Food and Drug Administration about her work on drug costs and drug safety. She lives in a DIY tiny home, where she gardens during the day and stargazes the Milky Way at night.