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Obstetrics39 papers

Bacterial vaginosis in pregnancy

Last edited: 4/10/2026

Overview

Bacterial vaginosis (BV) is a common vaginal condition characterized by an imbalance of vaginal bacteria. In pregnancy, BV has been associated with adverse birth outcomes.

Diagnosis

Management

Special Populations

Pregnancy

  • Oral microflora during pregnancy appears to be influenced by oral and systemic conditions such as gestational diabetes mellitus and pre-eclampsia 1.
  • Porphyromonas gingivalis* in subgingival plaque was more abundant in women with preterm birth 1. Prenatal dental care reduced the carriage of oral pathogens like Streptococcus mutans* 1.
  • The association between pregnancy oral microbiota and maternal oral/systemic health and birth outcomes requires further study due to inconclusive meta-analysis results 1.
  • Key Recommendations

  • Prenatal dental care may reduce the carriage of oral pathogens 1. (Evidence: Moderate)
  • Further studies are needed to elucidate the association between pregnancy oral microbiota and maternal oral/systemic health and birth outcomes 1. (Evidence: Moderate)
  • References

    1 Jang H, Patoine A, Wu TT, Castillo DA, Xiao J. Oral microflora and pregnancy: a systematic review and meta-analysis. Scientific reports 2021. link

    Original source

    1. [1]
      Oral microflora and pregnancy: a systematic review and meta-analysis.Jang H, Patoine A, Wu TT, Castillo DA, Xiao J Scientific reports (2021)
    2. [2]
      Taking probiotics during pregnancy. Are they useful therapy for mothers and newborns?Reid G, Kirjaivanen P Canadian family physician Medecin de famille canadien (2005)

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