Antibodies can be produced after a bout of novel coronavirus pneumonia if the immune system is normal. For viral infections, most people can heal themselves and produce antibodies to clear the virus. Antibodies protect the body from further infections for a certain period of time. Because the virus is constantly mutating, the period of protection from influenza is often less than one year. The duration of antibody protection cannot be clarified due to insufficient knowledge of novel coronavirus pneumonia. For immunodeficient patients, such as those taking immunosuppressants after organ transplantation and those with advanced AIDS, it is not clear whether antibodies can be produced by infection with novel coronavirus pneumonia due to abnormalities in the immune system, or how long the antibodies produced can last, and further analysis is needed. Source: Dr. Yurai