Customers are advised to discard prepacked fresh kale that was purchased from the Roosevelt Square Whole Foods in Seattle.
The kale sold at 1026 Northeast 64th Street may be contaminated with Listeria moncytogene.
The produce was sold in rectangular plastic containers labeled Whole Foods Market Kales Mixed OG (Organic), PLU 0258622 with packed-on date of 9.15.13 through 9.20.13.
Listeria can cause serious and sometimes fatal infections in young children, elderly people or those with weakened immune systems.
Symptoms include high fever, severe headache, stiffness, nausea, and abdominal pain and diarrhea.
No illnesses have been reported, but notice was given after a routine test by Washington State Department of Agriculture.
Customers who purchased the product may return it to the store for a refund.