CD4 and COVID-19: With the help of the CIBERSORT platform, it was observed that in COVID-19-positive patients, Plasma Cells, Activated CD4 Memory T Cells, CD8 T Cells, both Activated and Resting Dendritic Cells, M0 Macrophages, and Neutrophils were statistically different from that in COVID-19-negative patients (Figure 4A).