The FDA has escalated a tomato recall in Georgia, North Carolina, and South Carolina to a Class 1 warning—its most serious level—due to possible salmonella contamination.

The recall, initiated by Williams Farms Repack LLC, affects tomatoes distributed between April 23 and 28.

Although no illnesses have been reported, consumers are urged to return or discard the tomatoes, The Guardian has reported.

Salmonella can cause severe gastrointestinal symptoms and poses the greatest risk to young children, the elderly, and those with weakened immune systems.

Written by B.C. Begley