,17,19,89,90 Kinetic studies assessing immune responses throughout SARS-CoV-2 infection demonstrated that patients with prolonged infection and severe disease mounted robust antibody responses but had undetectable circulating SARS-CoV-2-specific T cells; on the contrary, those with a rapid expansion of IFN-γ+ SARS-CoV-2-specific T cells rapidly controlled infection without developing severe disease.17 Here, IFNG is linked to infection.