A recall of frozen berries has expanded to 33 states amid possible E. coli contamination, the article reports.

Federal safety officials and major retailers announced the wider withdrawal after tracking multiple illnesses.

Walmart and Trader Joe's are among the major chains affected by the expanded recall.

Ohio, Kentucky and Indiana are particularly affected, and Illinois shoppers are also included.

Health agencies have confirmed that 17 people have fallen ill during the outbreak.

Stores have blocked further sales of the affected items while pulling remaining stock, the article says.

Consumers should check freezers for specific lots of frozen blueberries and mixed fruit, then discard or return them.

Officials are reviewing distribution centers and suppliers to trace the contamination's exact origin.

Read the full article for details on the expanded frozen berry recall.