Currently, there are no cases of re-infection of novel coronavirus after cure at present. Novel coronavirus pneumonia is a self-limiting disease, and although there are no specific antiviral drugs or prophylactic means, the cure rate is high and there are almost no cases of recurrence or recurrent, re-infection. This is because antibodies are produced in the body for a period of time after the patient is discharged from the hospital, but further proof is needed as to whether lifelong protection can be achieved. The length of time that antibodies can be maintained in the body at higher titer levels is also still being studied. However, it is possible that antibodies in all people will produce a decline in antibody hormones when there is no antigen stimulation for a long time, so lifelong protection or prolonged protection is not possible, but there have been no cases of recurrence. Content source: Dr. Yurei