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According to some reports, up to 31% of pregnant women experience bacterial vaginosis. The etiology of vaginosis is overgrowth of Gardnerella vaginalis, anaerobes, and mycoplasmas. This infection can predispose women to preterm labor and postpartum endometritis. These British authors obtained vaginal cultures and assessed the impact of bacterial vaginosis on conception and miscarriage during the first trimester in 732 women undergoing in vitro fertilization. Specimens were tested for vaginosis by modified Spiegel's criteria on Gram stain. The infection was diagnosed if flora contained few lactobacilli and increased numbers of G vaginalis or other morphotypes. The ability to become pregnant and pregnancy loss were monitored.
About two thirds …