IFNG and COVID-19: Based on the information presented above, we can putatively suggest that, the positive correlation between IL-13 and IFN-α observed in both COVID-19 groups two months after the SARS-CoV-2 infection was important to control the inflammation and consequently minimize an eventual tissue injury in the airways, and, also, the positive correlation between IL-13 and IFN-γ can help the activation of the immune response leading to the SIgA production.