From the literature search outlined above, we targeted relevant cytokine concentrations reported in COVID-19 patient lungs (IL-1β: 564 pg/mL, IL-2: 23 pg/mL, IL-8: 8661 pg/mL, IL-10: 131 pg/mL and TNF-α: 34 pg/mL). Here, CXCL8 is linked to COVID-19.