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Rice is one of the highest risk foods for food poisoning (even when not pregnant) including listeria, due to its high water content. Thus the risk with lettuces also.
Bacteria breed with moisture, so you should NEVER reheat rice more than twice, or eat it more than 48 hours after it is first cooked.
Rice also has a high risk status due to how rice is processed, stored and transported and often not washed before cooking.
I would also like to point out that listeria is NOT "killed" at low temperatures, at all, it simply does not grow at those temperatures, but it will not remove/kill the bacteria that may be already present.[/COLOR]
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