Patient(42) vaccination(28) COVID-19(16) evaluated(12) Hospitalization(12) with COVID-19(11) antibody(11) hospitalized patient(11) disease(11) SARS-CoV-2(11) marker(10) SARS-COV-2 infection(10) administration(9) Efficacy(9) Mortality(9) Treatment(9) Risk factors(9) SARS-CoV-2 vaccination(9) median(9) hospitalized patients(8) therapy(8) develop(8) deficiency(8) evaluate(8) patients(8) BNT162b2(7) neutralizing antibody(7) immune response(7) Clinical efficacy(7) thrombosis(7)