The difference between novel coronavirus pneumonia and common respiratory infections, such as colds and influenza, is that with novel coronavirus pneumonia, fever and cough do not improve or even worsen 1 week after onset of illness, whereas symptoms of colds usually improve within 1 week. If there is an epidemiologic history of a cough that does not improve in 1 week, there should be a high suspicion of novel coronavirus pneumonia. There are many causes of cough, in addition to colds, influenza, and novel coronavirus pneumonia, there can be other respiratory diseases, such as chronic bronchitis, allergic cough, tumor-induced, and cough caused by swallowed foreign objects. Specific cases should be analyzed, if there is an epidemiological history of cough 1 week does not improve, to be highly suspicious of new coronavirus pneumonia, it is recommended to do chest CT, pharyngeal swab nucleic acid test. If there is no epidemiologic history of cough without fever, it is best to go to the respiratory department to ask the doctor to help determine. Source: Dr. Yurai