COVID-19(40) SARS-CoV-2(25) antibody(19) Patient(18) SARS-COV-2 infection(14) outcome(13) Host(11) vaccination(11) HLA(11) performed(11) COVID-19 patient(10) de novo(10) the patient(10) Donor(9) therapy(9) form(9) Infection(9) SARS-CoV-2.(9) subject(8) serum(8) Inflammatory(8) Inflammation(8) global pandemic(8) risk(8) Coronavirus disease 2019(8) Frequency(8) Activation(8) positive(7) recipient(7) pandemic(7)