African American women are also twice as likely to be vagina of black women with bacterial vaginosis and are twice as likely to experience preterm birth. Characterization of vaginal microbial communities in adult healthy women using cultivation-independent methods. In vagina of black women, women of European ancestry were more likely to be colonized by M. We analysed the microbiomes of pregnant African Americans and 76 pregnant women of European ancestry. Data for this investigation were obtained 6—12 months after delivery. Methods of the CAPS study have been reported in detail 13 and are briefly summarized here. A larger sample size would make these conclusions more definitive.