Sexual Health

June 2009

FocusSexual Health

Bacterial vaginosis

More questions than answers

Volume 38, No.6, June 2009 Pages 394-397

Marie Pirotta

Kath A Fethers

Catriona S Bradshaw

Background

Bacterial vaginosis is the commonest cause of abnormal vaginal discharge in women of reproductive age and is associated with serious pregnancy related sequelae and increased transmission of sexually transmissible infections, including HIV. The aetiology, pathology, microbiology and transmission of bacterial vaginosis remain poorly understood.

Objective/s

This article discusses the prevalence, clinical features and possible complications of bacterial vaginosis. It summarises what is known about the aetiology, pathophysiology and treatment of the condition and highlights directions for further research.

Discussion

Bacterial vaginosis is characterised by a complex disturbance of the normal vaginal flora with an overgrowth of anaerobic and other micro-organisms and a corresponding decrease in important lactobacillus species. The cause is not known, but observational evidence suggests the possibility of sexual transmission. Bacterial vaginosis is diagnosed by the Amsel or the Nugent method. Recommended treatment is with 7 days of oral metronidazole or vaginal clindamycin. More than 50% of women will experience recurrence of bacterial vaginosis within 6 months. It is not known whether this represents relapse or re-infection. Further research is needed into the aetiology, pathogenesis and optimal treatment of this condition.

Bacterial vaginosis (BV) is one of the commonest genital conditions ocurring in women of reproductive age. In public health terms, it plays a significant role as a risk factor for a wide range of health problems, including preterm birth, spontaneous abortion, and enhanced transmission of sexually transmissible infections (STIs), including human immunodeficiency virus (HIV).

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Correspondence afp@racgp.org.au

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