Successful transfer of anti-SARS-CoV-2 immunity using convalescent plasma in an MM patient with hypogammaglobulinemia and COVID-19

Key Points A severely immunocompromised patient with MM and COVID19 who received a convalescent plasma product showed SARS-CoV-2 clearance. The convalescent plasma showed humoral immunity against all structural SARS-CoV-2 proteins, which was successfully transferred to the patient.