Evidence map›Paper›PMID 22448002›Full record

ArticleThe Journal of infectious diseases2012

Extravaginal reservoirs of vaginal bacteria as risk factors for incident bacterial vaginosis.

Jeanne M Marrazzo, Tina L Fiedler, Sujatha Srinivasan, Katherine K Thomas, Congzhou Liu, Daisy Ko, Hu Xie, Misty Saracino, David N Fredricks

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 4 pooled it
6.0field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

67 citing papers in PubMed, 4 syntheses or guidelines pooled it, 116 citations in OpenAlex.

  1. Pooled it
  2. Sexually Transmitted Infections Treatment Guidelines, 2021.MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports · 2021
    Guideline
  3. Sexually transmitted diseases treatment guidelines, 2015.MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports · 2015
    Guideline
  4. Pooled it
  5. Trial
  6. Recovery ofNutrients · 2020
    Trial
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Carbohydrate Intake and Bacterial Vaginosis: A Systematic Review.American journal of lifestyle medicine · 2025
    Review
  14. Bacterial vaginosis.Nature reviews. Disease primers · 2025
    Review
  15. Draft genomes of threeMicrobiology resource announcements · 2025
    Article
  16. Article
  17. Article
  18. A rare case ofIDCases · 2025
    Article
  19. Review
  20. Review

7 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 2 countries.

Jeanne M MarrazzoDepartment of Medicine, Division of Allergy and Infectious Diseases, University of Washington, WA, USA. jmm2@uw.edu
Tina L Fiedler
Sujatha Srinivasan
Katherine K Thomas
Congzhou Liu
Daisy Ko
Hu Xie
Misty Saracino
David N Fredricks
Cape Town HVTN Immunology Laboratory / Hutchinson Centre Research Institute of South Africa · ZAUniversity of Washington · USCancer Research Center · USFred Hutch Cancer Center · US

Funding

Translational Bioimaging Core Shared ResourceP30CA015704 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI Marian Esvelt · 1985 to 2026
$296.4M
The Role of Uncultivated Bacteria in Bacterial VaginosisR01AI061628 · NIAID · FRED HUTCHINSON CANCER RESEARCH CENTER · PI FREDRICKS, DAVID NEAL · 2006 to 2016
$6.6M
The Acquisition of Bacterial Vaginosis in LesbiansR01AI052228 · NIAID · UNIVERSITY OF WASHINGTON · PI MARRAZZO, JEANNE M · 2002 to 2006
$2.0M
NCI NIH HHS P30 CA015704NIAID NIH HHS R01 AI052228NIAID NIH HHS R01 AI061628NIAID NIH HHS R01-AI52228-01
6 · The paper itself

Abstract

backgroundBacterial vaginosis (BV) represents shifts in microbiota from Lactobacillus spp. to diverse anaerobes. Although antibiotics relieve symptoms and temporarily eradicate BV-associated bacteria (BVAB), BV usually recurs. We investigated the role of extravaginal BVAB reservoirs in recurrence.

methodsRisks for BV acquisition over the course of 1 year were defined. DNA in vaginal, anal, and oral swab samples from enrollment was subjected to quantitative polymerase chain reaction assays targeting 16S ribosomal RNA genes of Gardnerella vaginalis, Lactobacillus crispatus, BVAB1, BVAB2, BVAB3, Megasphaera spp., Lactobacillus jensenii, and Leptotrichia/Sneathia spp. A case-control approach analyzed BVAB detection at enrollment for case patients (BV acquisition) versus controls (none).

resultsOf 239 women enrolled without BV, 199 were seen in follow-up, and 40 experienced BV; 15 had all samples for analysis. Detection of G. vaginalis in oral cavity or anal samples and Leptotrichia/Sneathia spp. in anal samples was more common at enrollment among case patients, who also had higher concentrations of these bacteria and Megasphaera relative to 30 controls at each site. In contrast, L. crispatus was detected more frequently in anal samples among controls.

conclusionsWomen who acquire BV are more likely have previous colonization of extravaginal reservoirs with some BVAB, and less likely to have L. crispatus, suggesting that BVAB may be acquired vaginally from extravaginal reservoirs.

Indexed as

AdolescentAdultAnal CanalBacteriaCase-Control StudiesCohort StudiesDisease ReservoirsDNA, BacterialFemaleFollow-Up StudiesGardnerella vaginalisHumansLactobacillusLeptotrichiaMegasphaeraMetagenomeDNA, BacterialRNA, Ribosomal, 16S

Identifiers

PMID22448002
PMCPMC3415820
OpenAlexW2139092047

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.