If you want to avoid listeria, you might want to pop your lunch meat in the microwave. Hot dogs, lunch meats, cold cuts and other deli meats need to be reheated to 165 degrees to reduce the risk of getting listeria, according to the Centers for Disease Control. Listeria causes fever, muscle aches and diarrhea. People at greatest risk are pregnant women, newborns, older adults and anyone who has cancer, diabetes, liver or kidney disease. Opened meat packages should be thrown out after three to five days.