Pasta meals from Trader Joe's and Walmart may be linked to a deadly listeria outbreak

The USDA is warning people not to eat specific batches of heat-and-eat products containing pre-cooked pasta, sold at Trader Joe

The USDA says the precooked pasta products, sold at Trader Joe's and Walmart, could be connected to a nationwide listeria outbreak that has killed four people and sickened at least 20 others.