The Kellogg Co. has announced a recall of some 10,000 cases of its waffles due to possible bacterial contamination.

The company reports that its Nutri-Grain Whole Wheat Waffles may be contaminated with Listeria monocytogenes, which "can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened immune systems."

The alert, posted on its website, is a precautionary measure as there have been no reports of illness in the 25 states affected by the recall. The company reports that contamination was discovered during routine testing, and that customers can contact Kellog for a full refund. 

Listeria's most common effects include high fever, abdominal pain, diarrhea, stiffness, and nausea, though infection can also cause more serious conditions including miscarriages and stillbirths among pregnant women.