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SALINAS, Calif. (CBSMiami/AP) — A company is recalling packaged vegetables throughout the U.S. and Canada over contamination concerns.

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Mann Packing says there have been no reported illnesses associated with the products. The recall was ordered last week after random testing in Canada turned up a single positive result for listeria.

The vegetables have “best if used by” dates from Oct. 11 through Oct. 20.

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The recalled brands are: Signature Farms products sold at Albertsons; Archer Farms products sold at Target; kohlrabi salad blends sold at Trader Joe’s; several varieties of broccoli and cauliflower sold at Walmart; and at least 30 Mann branded bags of veggies.

Listeria can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened immune systems.

Click here for a full list of the recalled items. 

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(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)