IL17A and COVID-19: For instance, patient DRASTIC-063 displayed higher IFN-2, IL-10, IL-12p70 and IL-17A in ETA (d8) than other COVID-19 respiratory samples, while the plasma (d7) level of IFN-2 was also higher, DRASTIC-063 had higher plasma level of IL-18 but not IL-10, IL-12p70 or IL-17A (Fig. 2b).