CRP and COVID-19: In the mild COVID-19 group, which showed significantly upregulated expression levels of miR-21, miR-155, and miR-146a, there was a significant positive correlation with creatinine (p < 0.04) and D-Dimer (p < 0.02), and a significant negative correlation with CRP (p < 0.02), FBS (p < 0.01), HB% (p < 0.02), and RBCs (p < 0.001).