Venn diagram analysis identified a set of common soluble immune mediators with fold change magnitude over 1.5× up to 15.7× in cord blood samples according to mother serum in all COVID-19 subgroups, comprising CCL11, CCL4, IFN-γ, PDFG, and G-CSF (Figure 5, * below bar charts). Here, CCL11 is linked to COVID-19.