Fig 2.

Correlation networks for immunologic cells and biomarkers. Networks showed different profiles of correlations in COVID-19 nonsurvivors (A and C) and survivors (B and D), on admission (Fig 2, A and B) and end hospitalization (Fig 2, C and D). The width of the edge showing stronger or weaker interactions is proportional to the absolute value of biomarker-biomarker correlation (|r|). Edges were shown only when |r| > 0.2. A purple edge indicates a positive correlation, and a blue edge indicates a negative correlation. PCT, Procalcitonin.