Previously, we found increased levels of 18 cytokines (including IL-6, IL-7, IL-15, IL-27, TNFα, TNFβ, CCL2/MCP-1, CCL7/MCP-3, CXCL1/GROα, CXCL8/IL-8, CXCL10/IP-10, CXCL9/MIG, IL-1ra, IL-10, M-CSF, GM-CSF, and VEGF-A) in blood plasma from COVID-19 patients the during the acute phase of the SARS-CoV-2 infection vs. healthy controls [39]. Here, IL15 is linked to COVID-19.