Patient(15) COVID-19(13) leukemia(11) Hematological malignancy(8) hematological(7) SARS-CoV-2(7) lymphoma(7) Infection(7) administration(6) baseline(6) therapy(6) were recorded(6) treated(6) chronic lymphocytic leukemia(5) monoclonal antibody(5) antibody(5) Mortality(5) CLL(5) imdevimab.(4) neutralizing antibody(4) early administration(4) Spike protein(4) COVID-19 diagnosis(4) lymphomas(4) occurred(4) Neutralizing(4) nine(4) monotherapy(4) asymptomatic patient(4) monoclonal(4)