According to current data, the longest incubation period for most novel coronaviruses is 14 days, and only a few patients will have an incubation period longer than 14 days. In general, when a person is infected with a novel coronavirus, the infection does not recur immediately and there is an incubation period of several days, usually 3 to 7 days, with the longest period not exceeding 14 days, and in some cases, the shortest incubation period is one day. However, it is important to note that the incubation period is also infectious and that the incubation period is also contagious. If you have recently come into contact with an infected patient and are not sure if you are infected, you need to isolate yourself, wash your hands at home, have more ventilation, try not to go out, and always wear a mask when you go out, and pay attention to your physical condition. If you develop fever, weakness, dry cough or difficulty in breathing, you should immediately go to the fever clinic of the hospital.