NFKB1 and legionellosis: The KEGG pathway enrichment analysis of Cluster 1 showed enrichment of the TNF signaling pathway, cytokine-cytokine receptor interaction, and JAK-STAT signaling pathway (Figure 5B), while in Cluster 2 NF-κB signaling pathway, Influenza A, and Legionellosis were enriched (Figure 5D).