COVID-19(135) SARS-CoV-2(120) convalescent plasma(91) antibody(83) Donor(77) plasma(72) Blood(62) Patient(58) coronavirus(52) convalescent(51) IgG(47) acute respiratory syndrome(46) CCP(45) tested(42) donors(41) neutralizing antibody(40) coronavirus disease(36) evaluated(34) Infection(33) individual(32) FFP transfusion(32) Treatment(30) pandemic(27) required(26) Viral(26) treated(26) SARS-COV-2 infection(26) binding(26) IgG antibody(26) Immunoglobulin(25)