Further analysis of the AUROC of inflammatory biomarkers in pregnant women with infections showed that the nCD64 index had the largest AUROC to discriminate bacterial infection among pregnant women (AUROC = 0.9183, P < 0.0001) and was significantly higher than that of leukocytes, PCT and CRP, whereas the AUROC of IL‐6 was the smallest and showed no statistical significance. The gene discussed is IL6; the disease is infection.