Food consumed by rats may be contaminated with bacteria or viruses, and people consuming it may become infected and may show symptoms of illness of varying degrees. The most common reason is that rats themselves carry bacteria, and the contaminated food may lead to bacterial overload, which may induce acute gastrointestinal reactions when people eat it again. If a serious situation occurs, it means that the rat carries the hemorrhagic fever virus, and when a person eats again it can easily lead to the emergence of epidemic hemorrhagic fever. Typical symptoms of the incubation period patients appear three red (facial flushing, neck redness, chest redness) and three pains (headache, eye pain, lumbago), and accompanied by fever and other symptoms. Eating something that a rat has eaten does not necessarily mean that you will be infected by bacteria or viruses, but if you become unwell, it is important to go to a regular hospital for an examination and cooperate with your doctor for treatment.