I think the main culprit in listeria cases these days are reheated foods meaning foods that are incorrectly reheated. Thanks for this thread lol, I just raided the Camembert in the fridge and have to do about 30 blocks walking to work it off! I was told that pre packaged stuff without the rind like ricotta and such is okay and at a pinch the pre packaged ham just in case the deli cross contaminates with uncleaned slicing machines.