SARS-CoV-2(65) COVID-19(59) antibody(35) Infection(24) immune response(23) RBD(21) Receptor binding domain(21) Antibody Response(20) IgG(20) the SARS-CoV-2(19) Vaccine(18) ELISA(18) specificity(18) vaccination(18) Antigen(17) evaluated(16) sensitivity(15) neutralizing antibody(15) platform(14) SARS-COV-2 infection(14) coronavirus(14) SARS-CoV-2.(14) serum(14) Antibody titer(13) Quantitative(13) humoral(13) the antibody response(12) binding(12) Neutralizing(12) Efficacy(12)