A bacterial infection, Listeria can cause all sorts of flu-like symptoms, as well as dizziness and muscle aches. It is especially problematic for pregnant women, children, and the elderly. In some cases it can be fatal.

Major brands affected by the recall include Safeway and Kroger, as well as Planter's.

See the FDA list for the full list of products affected, and learn more about the sunflower seed recall here.