Cancer(38) Patients with cancer(36) Patient(33) COVID-19(31) SARS-CoV-2(31) Treatment(30) outcome(30) participant(27) cohort study(27) age(26) vaccination(25) SARS-COV-2 infection(23) 95% CI(22) therapy(21) median(21) Chemotherapy(20) dose(18) IgG(17) response(17) patients(16) solid tumor(16) association(16) measure(15) receiving(15) treated(15) significantly lower(15) finding(15) Care(14) hematologic(14) were measured(14)