Further analysis using the multivariate logistic regression revealed that respiratory rate (OR: 1.058, 1.035–1.081), weight (OR: 0.483, 0.340–0.686), CRP (OR: 1.1442, 1.028–1.268), NEU (OR: 1.348, 1.232–1.555), HGB (OR: 0.989, 0.979–0.999), UA (OR: 1.006, 1.002–1.010), and BUN (OR: 1.230, 1.058–1.431) were independent risk factors for severe pneumonia (Supplementary Table S5). Here, CYGB is linked to pneumonia.