After COX regression correction, CRP (OR (95% CI): 1.022(1.003, 1.041), p = 0.021) and neutropenia (< 1.5 × 109/L) (OR (95% CI): 21.634 (2.05, 228.313, p = 0.011) within 24 h of infection were the independent risk factor for death in children with AB-BSI (Table 4). The gene discussed is CRP; the disease is infection.