It is not clear how many days it takes to cure a novel coronavirus. Currently, the information available on the course of novel coronavirus is that the incubation period is usually 3-7 days, with a maximum of 24 days, and is divided into general and critical forms. The duration of the illness depends on the patient and the disease. Young adults without underlying disease have a short course, while older adults with diabetes and hypertension have a relatively long course, which can even turn into critical illness and eventually lead to death.