New coronavirus pneumonia is also contagious during the incubation period, the main source of infection is patients with fever, cough and other symptoms, and during the incubation period if the nucleic acid test is positive, it is also contagious, so we must do a good job of protection. We must wear a mask when going out, wash our hands when going back, and wash our clothes, because patients in the incubation period may not have obvious respiratory symptoms such as coughing and sputum, or even only have mild fever, or even no fever at all, and some of them are also infectious. There may be less infectious than the onset stage, but so far confirmed that the nucleic acid test positive will be infectious, this part of the people need to isolate early, this part of the people, although the detoxification is relatively small, because of the lack of symptoms in the early stage, so may be ignored in this part of the patient, may result in more spread, so we must attach great importance to this part of the people. Content source: Dr. Yurai