The Centers for Disease Control and Prevention said Friday that 12 people in six states have been hospitalized in the outbreak. Salads have been sold under the names Dole, Fresh Selections, Simple Truth, Marketside, The Little Salad Bar and President's Choice.
The CDC says Dole has stopped all production at the Springfield, Ohio, plant and is withdrawing packaged salads on the market that were produced there.
The agency says that the illnesses were in Michigan, New York, Indiana, Massachusetts, New Jersey and Pennsylvania.
Listeria can cause fever, muscle aches and gastrointestinal symptoms and can be fatal. It also can cause miscarriage, stillbirth, premature labor, and serious illness or death in newborn babies.
According to the CDC, here's how to identify if your packaged salad could possibly be affected.
- Consumers can identify these packaged salads by the letter "A" at the beginning of the manufacturing code found on the package.
- At this time, there is no evidence to suggest that packaged salads produced at other Dole processing facilities in the United States are linked to illness.
- This advice is particularly important for consumers at higher risk for listeriosis, including pregnant women, adults 65 and older, and people with weakened immune systems.