The infection branch treats object disease which creates for each kind of microorganism infection, but the microbiology included the virus, the bacterium, the mold and the parasite and so on. Generally speaking, the infection sickness displays the symptom because of the body inflammation. Different infection spot or pathogen can have different performance, for example, the skin bacterium infection, possibly can be red, swells, heat, and pain. But pneumonia symptom can be dyspnea, coughs and fever and so on. Besides the infection sickness, we are also responsible for the infection consulation and the infection control group decision-making.