Fig. 9: Changes in cervicovaginal bacterial community in asymptomatic pregnant women between gestational time points (GTPs).

a and b Community state types (CSTs). Key: red = high or more dominant; blue = low or less dominant. c and d Alpha-diversity. There was a decrease in community diversity from GTP1 to GTP2 in the term-delivered women, while an opposite trend was observed in the preterm-delivered women (p < 0.0001). GTP1: 20–22 weeks (n = 21); GTP2: 26–28 weeks (n = 19), term = 26 and preterm = 14; Wilcoxon rank-sum test.