COVID-19(50) SARS-CoV-2(28) Hemodialysis(16) Patient(14) acute respiratory syndrome(12) coronavirus disease(12) antibody(12) coronavirus(11) positive(10) Follow-up(10) Abstract(8) IgG(8) AKI(8) Antibody Response(8) Presence(8) dialysis(7) 95% confidence interval(6) SARS-COV-2 infection(6) the SARS-CoV-2(6) SARS-CoV-2 antibody(6) acute respiratory syndrome coronavirus 2(6) severe acute respiratory syndrome Coronavirus(6) transplantation(6) humoral(6) Evolution(6) subsequent(6) baseline(6) Humoral response(6) Prevent(6) acute respiratory syndrome coronavirus(6)