Evidence map›Paper›PMID 26081632›Full record

ArticlemBio2015

Penile Microbiota and Female Partner Bacterial Vaginosis in Rakai, Uganda.

Cindy M Liu, Bruce A Hungate, Aaron A R Tobian, Jacques Ravel, Jessica L Prodger, David Serwadda, Godfrey Kigozi, Ronald M Galiwango, Fred Nalugoda, Paul Keim and 3 more

Open access · goldAbstract read
In one paragraph

Article in mBio, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 1 pooled it
6.9field-weighted citation impact, top 2% 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

76 citing papers in PubMed, 1 synthesis or guideline pooled it, 117 citations in OpenAlex.

  1. Sexually Transmitted Infections Treatment Guidelines, 2021.MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports · 2021
    Guideline
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Review
  7. HIV Transmission and Immunology of the Male Reproductive Tract.American journal of reproductive immunology (New York, N.Y. : 1989) · 2026
    Review
  8. Anaerobe-Driven Inflammation and Epithelial Barrier Disruption in Genital HIV Acquisition.American journal of reproductive immunology (New York, N.Y. : 1989) · 2026
    Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Bacterial vaginosis: an overlooked STI?Expert review of anti-infective therapy · 2025
    Review
  20. Bacterial vaginosis.Nature reviews. Disease primers · 2025
    Review

16 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

13 authors at 8 institutions in 3 countries.

Cindy M Liucliu5@jhmi.edu.
Bruce A HungateCenter for Ecosystem Science and Society and Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona, USA.
Aaron A R TobianDepartment of Pathology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.
Jacques RavelInstitute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Jessica L ProdgerDepartment of Medicine, University of Toronto, Toronto, Canada.
David SerwaddaRakai Health Sciences Program, Entebbe, Uganda.
Godfrey KigoziRakai Health Sciences Program, Entebbe, Uganda.
Ronald M GaliwangoRakai Health Sciences Program, Entebbe, Uganda.
Fred NalugodaRakai Health Sciences Program, Entebbe, Uganda.
Paul Keim
Maria J WawerDepartment of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA.
Lance B Price
Ronald H GrayDepartment of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA.
Rakai Health Sciences Program · UGJohns Hopkins University · USNorthern Arizona University · USJohns Hopkins Medicine · USMilken Institute · USTranslational Genomics Research Institute · USUniversity of Maryland, Baltimore · USUniversity of Toronto · CA

Funding

Male Circumcision Trial for HIV Prevention, Rakai-UgandaU01AI051171 · NIAID · JOHNS HOPKINS UNIVERSITY · PI GRAY, RONALD H · 2002 to 2006
$8.9M
Genital Anaerobes, Inflammation and HIV Risk; RakaiR01AI087409 · NIAID · JOHNS HOPKINS UNIVERSITY · PI GRAY, RONALD H, PRICE, LANCE BRADLEY · 2010 to 2012
$2.5M
Male Circumcision and Use of Foreskin Tissues for HIV Prevention in UgandaD43TW009578 · FIC · JOHNS HOPKINS UNIVERSITY · PI GRAY, RONALD H · 2013 to 2017
$1.3M
Oncogenic HPV, Mucosal Immune Response and Risk of HIV AcquisitionK23AI093152 · NIAID · JOHNS HOPKINS UNIVERSITY · PI TOBIAN, AARON A · 2011 to 2015
$684k
FIC NIH HHS D43 TW009578NIAID NIH HHS K23 AI093152NIAID NIH HHS NIH 1K23AI093152-01A1NIAID NIH HHS R01 AI087409NIAID NIH HHS R01AI087409-01A1NIAID NIH HHS U01 AI051171NIAID NIH HHS U01AI51171
6 · The paper itself

Abstract

unlabelledBacterial vaginosis (BV) is a common vaginal bacterial imbalance associated with risk for HIV and poor gynecologic and obstetric outcomes. Male circumcision reduces BV-associated bacteria on the penis and decreases BV in female partners, but the link between penile microbiota and female partner BV is not well understood. We tested the hypothesis that having a female partner with BV increases BV-associated bacteria in uncircumcised men. We characterized penile microbiota composition and density (i.e., the quantity of bacteria per swab) by broad-coverage 16S rRNA gene-based sequencing and quantitative PCR (qPCR) in 165 uncircumcised men from Rakai, Uganda. Associations between penile community state types (CSTs) and female partner's Nugent score were assessed. We found seven distinct penile CSTs of increasing density (CST1 to 7). CST1 to 3 and CST4 to 7 were the two major CST groups. CST4 to 7 had higher prevalence and abundance of BV-associated bacteria, such as Mobiluncus and Dialister, than CST1 to 3. Men with CST4 to 7 were significantly more likely to have a female partner with a high Nugent score (P = 0.03). Men with two or more extramarital partners were significantly more likely to have CST4 to 7 than men with only marital partners (CST4 to 7 prevalence ratio, 1.84; 95% confidence interval [CI], 1.16 to 2.92). Female partner Nugent BV is significantly associated with penile microbiota. Our data support the exchange of BV-associated bacteria through intercourse, which may explain BV recurrence and persistence. IMPORTANCE: Bacterial vaginosis (BV) is sexually associated but not considered a sexually transmitted disease. Our findings suggest that the uncircumcised penis is an important niche for BV-associated genital anaerobes. In addition, we found a link between extramarital sexual relationships and BV-associated bacteria in men, which parallels earlier findings of the association between sexual activity and BV in women. This suggests the sexual transmissibility of BV-associated bacteria. Reducing bacterial exchange by barrier methods and managing carriage of BV-associated bacteria in men may decrease BV persistence and recurrence in women.

Indexed as

MicrobiotaSexual PartnersDNA, BacterialDNA, RibosomalFemaleHumansMaleMobiluncusPenisReal-Time Polymerase Chain ReactionRNA, Ribosomal, 16SSequence Analysis, DNAUgandaVaginosis, BacterialVeillonellaceaeDNA, BacterialDNA, RibosomalRNA, Ribosomal, 16S

Identifiers

PMID26081632
PMCPMC4471566
OpenAlexW1938317057

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.