Results of positive vaginal secretion culture
For all 1797 parturients who undergone the fever during childbirth, vaginal secretion ­­culture was performed. Out of 1797 intrapartum fever women in labor, 276 cases (15.36%) were tested with positive vaginal secretion culture (The detailed results of the vaginal secretion culture were presented in Figure S3). We then further subdivided positive section into gram-positive bacteria (G+), gram-negative bacteria (G-), and fungus, as for each group, the number of positive women was 122, 69, and 85, respectively. Table 5 describes the pre-, intra-, and postpartum complete blood cell count in three subgroups. From Table 5, we could find the value of the positive test results difference mainly existed in RBC, Hb, and PLT, including prepartum RBC, Hb, and PLT, intrapartum RBC and Hb, as well as postpartum PLT. The value of prepartum RBC was 4.12 × 1012/L, 4.10 × 1012/L, and 3.93 × 1012/L for subgroup G+, G-, and fungus, respectively (P = 0.009). And for intrapartum RBC, the matching value was 4.13 × 1012/L, 4.20 × 1012/L, and 3.97 × 1012/L (P = 0.011). But this difference did not exist in postpartum (P = 0.984). The changing trend of Hb was consistent with RBC (P =0.025, 0.010, and 0.071 for pre-, intra-, and postpartum RBC, respectively). However, the value of PLT showed different tendency. Prepartum and postpartum PLT manifested difference but not in intrapartum (P =0.022, 0.080, and 0.014 for pre-, intra-, and postpartum RBC, respectively). In addition, post hoc test (results not shown) suggested that the difference appeared in fungus with G+ or G- but not G+ with G-. In other words, the difference principally occurred in fungus with bacteria rather than different bacteria. Nonetheless, the value of WBC, neutrophils, monocytes, and lymphocytes in three groups presented no significant difference.