Convalescent plasma (CP) therapy: The figure illustrates the process and importance of CP therapy to treat COVID-19 disease. CP therapy is an immunotherapy where the humoral antibody (Ab) from the recovered patients to the severely affected diseased patients. In CP therapy, as the SARS-CoV-2 affected is infected the Ab spans out and marks the virus as an intruding agent into the human system. This in future triggers the White blood cells to identify the SARS-CoV-2 virus which deactivates the viral function in the human body. In this procedure almost 1ltr of blood will be collected from the recovered patients and approximately 250 ml of plasma will be injected to the COVID-19 diseased patients. This might reduce the COVID-19 disease symptoms, give relief to the patients and would get recovered from this dreadful infection.