Enrichment analysis using these differentially expressed genes exhibited that deregulated genes of SARS-CoV-2 infection can exert biological functions such as regulation of inflammatory response, negative regulation of type I interferon, response to interferon-gamma, interferon-gamma-mediated signaling, NIK/NF-kappaB signaling, regulation of the apoptotic process, cellular response to hypoxia, angiogenesis, negative regulation of inflammatory response, zinc ion binding, and calcium ion binding; all of these were not enriched for SARS-CoV infection (Figures 2A,B). Here, IFNG is linked to severe acute respiratory syndrome.