Colds are common colds. In addition to common colds, there are also influenza in winter and spring. The common cold is mainly characterized by fever, sore throat, runny nose and sneezing, and the fever usually lasts for 2-3 days and gets better. While the new coronavirus pneumonia fever lasts for a long time, usually more than 3 days or more, and the symptoms of upper respiratory tract infection is not obvious, such as cough, cough sputum, runny nose is not obvious, mainly dry cough. New coronavirus pneumonia is an infectious disease, infectious, infectious between people, through the respiratory droplets for direct transmission. Can be transmitted through contact, such as droplets fall on the door handle, someone and go to touch the door handle, the hand is contaminated, contaminated hands and touch their own mouth, nose, eyes, etc., will produce contact with the infection, so the new coronavirus is contagious. Influenza is characterized by a certain degree of contagiousness, but the onset of the disease is more acute, the body temperature is higher, usually above 39 degrees, and the systemic symptoms are more pronounced, such as myalgia, headache, dizziness and a series of other symptoms, but also respiratory symptoms. In terms of laboratory tests, if the flu patients, to the fever clinic to do a throat swab can be found when the A or B is positive, after the common cold to the hospital, the general situation of viral infections in the blood routine leukocytes are generally not high or even lower, the proportion of lymphocytes is increased. New coronavirus pneumonia to the hospital to check the blood routine, will find that the white blood cells are not high, but the lymphocytes in the progressive decline, either the common cold or influenza lungs do not have a shadow, while the new coronavirus pneumonia due to inflammation of the lungs, so the photo sub when you can see bilateral lungs have a hairy glass-like changes, so there is a clear difference between the cold and the new coronavirus pneumonia. Source: Dr. Yurai