According to the univariate analysis, the risk factors of meningitis were patients < 12 months of age (OR: 16.04, P = 0.009), septic shock (OR: 23.4, P = 0.013), vomit (OR: 13.33, P < 0.001), convulsion (OR: 15.86, P < 0.001), CRP ≥ 40 g/L (OR: 5.56, P = 0.009), and higher PCT (OR: 1.05, P = 0.013) (see Table 2). This evidence concerns the gene CRP and infectious meningitis.