Evidence map›Paper›PMID 21389155›Full record

ArticleJournal of clinical microbiology2011

Comparison of strain typing results for Clostridium difficile isolates from North America.

Fred C Tenover, Thomas Akerlund, Dale N Gerding, Richard V Goering, Therése Boström, Anna-Maria Jonsson, Edith Wong, Alan T Wortman, David H Persing

Abstract readEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

42 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Decreased cure and increased recurrence rates for Clostridium difficile infection caused by the epidemic C. difficile BI strain.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2012
    Trial
  4. A Colombian strain ofVirulence · 2025
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  8. Temporal Variations in Patterns ofAntibiotics (Basel, Switzerland) · 2021
    Article
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  12. Biological characteristics associated with virulence inEmerging microbes & infections · 2020
    Article
  13. Emerging microbes & infections · 2019
    Review
  14. A Review of Mixed StrainFrontiers in microbiology · 2019
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Complete Genome Sequence ofGenome announcements · 2017
    Article
  20. Article
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.

Fred C TenoverCepheid, Sunnyvale, California 94089, USA. fred.tenover@cepheid.com
Thomas Akerlund
Dale N Gerding
Richard V Goering
Therése Boström
Anna-Maria Jonsson
Edith Wong
Alan T Wortman
David H Persing

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Accurate strain typing is critical for understanding the changing epidemiology of Clostridium difficile infections. We typed 350 isolates of toxigenic C. difficile from 2008 to 2009 from seven laboratories in the United States and Canada. Typing was performed by PCR-ribotyping, pulsed-field gel electrophoresis (PFGE), and restriction endonuclease analysis (REA) of whole-cell DNA. The Cepheid Xpert C. difficile test for presumptive identification of 027/NAP1/BI isolates was also tested directly on original stool samples. Of 350 isolates, 244 (70%) were known PCR ribotypes, 224 (68%) were 1 of 8 common REA groups, and 187 (54%) were known PFGE types. Eighty-four isolates typed as 027, NAP1, and BI, and 83 of these were identified as presumptive 027/NAP1/BI by Xpert C. difficile. Eight additional isolates were called presumptive 027/NAP1/BI by Xpert C. difficile, of which three were ribotype 027. Five PCR ribotypes contained multiple REA groups, and three North American pulsed-field (NAP) profiles contained both multiple REA groups and PCR ribotypes. There was modest concordance of results among the three methods for C. difficile strains, including the J strain (ribotype 001 and PFGE NAP2), the toxin A-negative 017 strain (PFGE NAP9 and REA type CF), the 078 animal strain (PFGE NAP7 and REA type BK), and type 106 (PFGE NAP11 and REA type DH). PCR-ribotyping, REA, and PFGE provide different but overlapping patterns of strain clustering. Unlike the other methods, the Xpert C. difficile 027/NAP1/BI assay gave results directly from stool specimens, required only 45 min to complete, but was limited to detection of a single strain type.

Indexed as

Bacterial Typing TechniquesCanadaClostridioides difficileClostridium InfectionsCluster AnalysisElectrophoresis, Gel, Pulsed-FieldGenotypeHumansMolecular EpidemiologyMolecular TypingPolymorphism, Restriction Fragment LengthProhibitinsRibotypingUnited StatesProhibitins

Identifiers

PMID21389155
PMCPMC3122689

What OpenQuestion holds

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Registered trials

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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.