Many people think that the germs in frozen food must be killed at low temperatures before they can be eaten with confidence. In fact, frozen food may also contain germs, leading to the occurrence of \”ice cream disease\”. Take Listeria, for example, which can survive and multiply in low-temperature environments. It can contaminate ice cream, chicken, sausages, milk, vegetables, etc. in the refrigerator. Once pregnant women are infected, it can cause miscarriage and fetal malformations. In addition, pregnant women should also prevent \”cold drink disease\” and