Fig. 5

Clustering analyses of biological biomarkers in COVID-19 patients. A Hierarchical clustering of 29 biological biomarkers based on the subsets of moderately-ill patients (top left) and severely-ill patients (bottom right). The significance of any correlation coefficient (absolute value > 0.4 and p-value < 0.05) was highlighted by an asterisk *. Three clusters (i), (ii), and (iii) were indicated based on the hierarchical clustering. B Plots of white blood cells versus neutrophils. C Plots of C-reactive protein versus IL-2R