It is unlikely that the absence of cough is a novel coronavirus infection. The novel coronavirus invades humans through the mucous membranes and causes damage to the respiratory tract, and as long as there is damage to the respiratory tract, the cough receptors in the respiratory tract will be stimulated, reaching the center through the afferent nerves and then the effectors through the efferent nerves to produce cough symptoms. The absence of coughing indicates that there is no respiratory infection, so it is unlikely to be a novel coronavirus infection. If you suspect that you have a novel coronavirus infection, you can see if you have an epidemiological history of novel coronavirus pneumonia and see if there are any corresponding clinical manifestations, such as fever, cough, and specific manifestations of blood tests and CT to determine if it is a suspected case, and if it is determined to be a suspected case, you will be isolated immediately and the next step will be to confirm the diagnosis.