Related Experiment Video
Updated: Aug 10, 2026

Models of Murine Vaginal Colonization by Anaerobically Grown Bacteria
Published on: May 25, 2022
Variability of bacterial vaginosis over 6- to 12-month intervals
Roberta B Ness1, Kevin E Kip, David E Soper
1University of Pittsburgh, Graduate School of Public Health, Pennsylvania, 15261, USA. repro@pitt.edu
Objectives:
To examine variability in bacterial vaginosis (BV) over 6- to 12-month intervals.
Study Design:
One thousand one hundred ninety-three women were followed for a median of 3 years with serial vaginal swab Gram stains for BV. Discrete time hazard models were fit to identify independent risk factors for BV.
Results:
Women with BV at study entry were categorized as having normal flora at the next visit 20% of the time, and women with normal flora at study entry were categorized as having BV at the next visit 20% of the time. Among women with initially normal flora, factors associated with BV were black race, lower education, a history of BV, a history of chlamydial/gonococcal cervicitis, and lack of monogamy.
Conclusion:
About one fifth of women with normal flora develop BV over a given 6- to 12-month interval, and the modifiable risk factors of cervicitis and lack of monogamy contribute to the development of BV.
More Related Videos
11:09Multiplex Detection of Bacteria in Complex Clinical and Environmental Samples using Oligonucleotide-coupled Fluorescent Microspheres
Published on: October 23, 2011
08:53Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
Published on: December 4, 2020
Related Concept Videos
Microbiota of the Urogenital Tract
Variability: Analysis
The range is a simple measure of variability, indicating the difference between the highest and...
Development of Human Microbiota
Trichomoniasis