RT Journal Article SR Electronic T1 The beneficial and pathogenic roles of complement in COVID-19 JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic DO 10.3949/ccjm.87a.ccc065 A1 Alfred H.J. Kim A1 Xiaobo Wu A1 John P. Atkinson YR 2020 UL http://www.ccjm.org/content/early/2020/10/27/ccjm.87a.ccc065.abstract AB We briefly summarize the complement system and its functions in immunity and disease. We present data supporting the requirement of complement to resolve COVID-19, and discuss how complement overactivation later in severe disease could drive multiorgan damage characteristic of fatal COVID-19.