Antibodies are present in the body after a person is cured of novel coronavirus pneumonia. At present, there is no specific treatment or preventive medicine for novel coronavirus pneumonia, and much of the treatment relies on autoimmunity. It is now proposed that the plasma of recovered patients cured of novel coronavirus pneumonia may contain very high titers of antibodies against novel coronavirus pneumonia, and that this antibody can be transfused directly to the critically ill patient, so that the immune system of the critically ill patient and the foreign antibodies can effectively fight against the virus and provide effective treatment for pneumonia. After the new coronavirus pneumonia is cured, and even before it is cured, there are antibodies in the body, but the concentration of antibodies varies for each person. Content source: Dr. Yurai