Neocoronavirus is the abbreviation of novel coronavirus pneumonia. Nucleic acid test may not be able to detect neocoronavirus pneumonia at one time, and some patients carry neocoronaviruses with latent period, which need to be diagnosed through multiple nucleic acid tests. Positive nucleic acid test results can be recognized as novel coronavirus pneumonia, and some patients can be detected at one time. However, there is a certain incubation period for the new coronavirus, and most of the new coronaviruses have an incubation time of about 14 days. In the early stage of infection, the concentration of the virus in the body is relatively low, and the body may have a low level of the virus or may not have secreted the virus completely when conducting the nucleic acid test, which leads to a negative result and the diagnosis can only be confirmed through multiple tests. The new coronavirus pneumonia is highly contagious and has a long incubation time. If you have a history of close contact with the disease, you should actively cooperate with the epidemic prevention personnel to conduct multiple nucleic acid tests, and once diagnosed, you must implement centralized isolation management and professional treatment under the guidance of a doctor. Tips] In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.