Elevated inflammatory markers including D-dimer, IL-6, IFN-β/PXT3/IFN-γ/IFN-lambda/IL-6 combination, CD56+ NK cells, granulocytes, neutrophils, CXCR3+ monocytes, and C-reactive protein (CRP) have been found in PASC patients during convalescence (23–27). This evidence concerns the gene IL6 and long COVID-19.