*All variables were standardized per week and rescaled between 0 and 1.
Abbreviations: Ct= Cycle threshold; IFN=interferon; IL=interleukin; IP =
interferon gamma inducible protein-10; MIP -1= macrophage inflammatory
protein-1; MCP-1= monocyte chemoattractant protein-1; PaO2/FiO2 = Oxygen
arterial pressure/ fraction of inspired oxygen;