The U.S. Food and Drug Administration announced that 55,689 pounds of individually quick-frozen blueberries processed by Oregon Potato Company are subject to a Class I recall due to possible contamination with Listeria monocytogenes. The Salem, Oregon-based company specializes in frozen and dehydrated potatoes, vegetables, and fruits.

Although the recall notice was first issued on February 12, federal regulators upgraded it on Tuesday to Class I status, the agency’s most serious designation. The FDA stated that exposure to the bacteria “could cause serious adverse health consequences or death.”

The affected blueberries were distributed to businesses in Michigan, Oregon, Washington, and Wisconsin, as well as locations in Canada. According to the FDA, the product was not sold directly to consumers at retail stores but was shipped between businesses within the supply chain.

Impacted products include 30-pound corrugated cases containing polyethylene bags with expiration dates ranging from July 23, 2027, to July 24, 2027. The cases bear lot codes 2055 B2, 2065 B1, and 2065 B3. Additionally, 1,400-pound bulk totes packaged in polyethylene liners within large shipping containers are included in the recall. Those totes carry lot codes 3305 A1 and 3305 B1, both with expiration dates of November 25, 2027.

Listeria monocytogenes is a bacterium that can cause foodborne illness, typically transmitted during food harvesting or processing. Symptoms may include fever, diarrhea, and vomiting. While healthy adults often recover without severe complications, infections can be especially dangerous for pregnant women, newborns, the elderly, and individuals with weakened immune systems.

The recall was initiated via email notification and remains ongoing as regulators monitor the situation.