(A) Immune mediators and bacterial phylotypes are presented on the left and right sides of the plot, respectively. Red lines indicate a lower slope of the association between the concentration of an immune mediator and the relative abundance of a bacterial phylotype in preterm birth cases than in term controls. The fold changes represent a difference in the rate of change in the immune mediator concentration given a unit increase in bacterial phylotype relative abundance between cases and controls. Correlation analysis between vaginal concentrations of CXCL10 (B), IL-16 (C), CCL22 (D) and the relative abundance of Sneathia sanguinegens. Association between the vaginal concentrations of CCL26 and the relative abundance of Sneathia sanguinegens
(E), Gemella spp. (F), and BVAB2 (G).