As shown in Figure 3, several chemokines including GCP‐2, CCL1, MIP‐2 alpha CXCL2, MIP‐3 beta CCL19, MPIF CCL23, and TECK CCL25 were found to be significantly elevated in the COVID‐19 group compared to the non‐COVID‐19 group. Here, CCL23 is linked to COVID-19.