Novel coronavirus pneumonia, the inflammation caused by damage to lung tissue by a novel coronavirus, is defined as novel coronavirus pneumonia. Previously, it was necessary to distinguish between bacteria and viruses, which are the most infectious species in human life. The difference between bacteria and viruses is that bacteria have a cell wall, while viruses do not. The usual antibiotics work mainly on bacteria, and after the use of antibiotics, bacteria die because they cannot produce a cell wall, while viruses are similar to human cells, so the usual antibiotics do not kill viruses. The new coronavirus is called coronavirus because the form is like a corolla, and there are about six coronaviruses, the more famous ones are SARS virus and Middle East respiratory distress syndrome virus. The coronavirus discovered this time is a new coronavirus, which has not been found in humans before. This virus is found mainly in animals, such as bats, and can be associated with transmission among humans. The manifestation of this new coronavirus pneumonia is significantly different compared to the previous SARS, characterized by relatively mild symptoms of upper respiratory tract infection, i.e., relatively mild symptoms of cough, sputum, and runny nose, manifested as a dry cough, an insignificant elevation of white blood cells and a progressive decrease of lymphocytes, and hairy glass-like changes in the lungs that can be seen on CT of the lungs, and a double lung lesion. Content source: Dr. You Lai