Trader Joe's walnut recall: What you need to know

Supermarket chain Trader Joe's is recalling raw walnuts because they could be contaminated with Salmonella, the FDA announced Tuesday.

Routine testing revealed Salmonella's presence in certain packages of the company's raw walnuts.

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To date, Trader Joe's has not received complaints of anyone falling ill from the recalled items, which shipped to stores nationwide.

Following the detection, Trader Joe's removed all lots of the walnuts from shelves and plans to suspend sales of these products while the FDA and involved manufacturers continue investigating.

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Here is what you need to know about the recall:

What is Salmonella? It is an organism that can lead to serious infections in at-risk groups, like young children, frail and elderly people or those with weakened immune systems

What are the symptoms of Salmonella infection? They can be fever, diarrhea, nausea, vomiting and abdominal pain. In rare cases, infection can also lead to more severe illness, like infected aneurysms, endocarditis and arthritis.

How do I know if I bought this? Check the UPC and lot numbers here.

What should I do if I have purchased the walnuts? Do not eat them. Instead, throw them away or return the walnuts to any Trader Joe's for a full refund.

Still have questions? Customers can contact Trader Joe's customer relations at (626) 599-3817 on weekdays from 9 a.m. to 9 p.m. ET or the FDA at (626) 599-3817.