CFP and COVID-19: Shen et al., on a cohort of 118 individuals (65 severe and 65 non-severe COVID-19 patients versus 53 non-COVID controls) identified 105 proteins differently expressed in sera from COVID-19 vs. non-COVID patients; among them, 50 proteins are involved in 3 main pathways: complement activation (down-regulation of properdin and 2 apolipoproteins), platelet degranulation (down-regulation of platelet expressing chemokines), and macrophage function (down-regulation of several apolipoproteins).