According to KEGG enrichment analysis (Figure 3B), DEGs enrichment pathways of PI and P were very similar, mainly concentrated in bacterial infection, cell signal transduction, cell adhesion and migration, NF‐kappa B signaling pathway, and the DEGs‐specific enrichment pathways of PI were mainly Th17 cell differentiation, IL‐17 signaling pathway, Toll‐like receptor signaling pathway. The gene discussed is IL17A; the disease is bacterial infectious disease.