A company based in Oregon is pulling back almost 56,000 pounds of frozen blueberries from the market due to a potential Listeria contamination. This recall has been labeled as the most critical category by federal authorities this week.

The U.S. Food and Drug Administration (FDA) disclosed online that the Oregon Potato Company circulated these blueberries across Michigan, Oregon, Washington, Wisconsin, and Canada. The FDA clarified that these products were not available for purchase in retail stores, leaving it uncertain if consumers acquired them through other means.

Attempts to reach Oregon Potato Company for comments have gone unanswered.

The recall of these frozen fruits, initiated by the company on February 12, was escalated by the FDA to a “Class I” recall. This designation suggests there is a “reasonable probability” that consuming the product could lead to “serious adverse health consequences or death,” according to the agency.

While Listeria infection can result in mild effects like fever, nausea, and muscle aches, it can be life-threatening in severe cases. Those most vulnerable include pregnant women and individuals over 65 with compromised immune systems.

The affected frozen blueberries were distributed in 30-pound cases and 1,400-pound totes, identified by specific lot codes.

• 30-pound cases: 2055 B2, 2065 B1, and 2065 B3
• 1,400-pound totes: 3305 A1 and 3305 B1