Novel coronavirus pneumonia is an infectious disease transmitted through droplet transmission and close contact. Epidemiologically, only patients who have been in contact with novel coronavirus pneumonia can be infected. A clear history of exposure is a prerequisite for illness. However, there is a clinical incubation period from exposure to the virus to the onset of the disease, usually with a minimum clinical incubation period of 1-2 days and a maximum period of about 2 weeks, with individual patients having up to 20 days. Therefore, if you are in close contact with a patient with novel coronavirus pneumonia, be sure to self-isolate for at least 2 weeks. Content source: Dr. Yurai