Furthermore, increased fold change in the chemokines (Figure 3e) ENA‐78 (P = 0.0226), fractalkine (P = 0.0052) and MCP‐2 (P = 0.0011) and growth factors (Figure 3f) HGF (P = 0.0197) and MMP‐1 (P = 0.0407) were also correlated with subsequent infection. The gene discussed is MMP1; the disease is infection.