P643: Risk Factors for Unfavorable Outcome of Hospitalized Pantients With Concurent Chronic Lymphocytic Leukemia and Covid-19 – Experience of Three Serbian University Centers

Abstract

Background: Background: Vulnerability of patients (pts) with chronic lymphocytic leukemia (CLL) and their susceptibility to Covid-19 infection is documented in several studies with reported case fatality rates (CFRs) up to 40%, but there is still paucity of data on identifying risk factors of their adverse outcome.