Evidence map›Paper›PMID 23196363›Full record

ArticleJournal of clinical microbiology2013

Capsular gene typing of Streptococcus agalactiae compared to serotyping by latex agglutination.

Kaihu Yao, Knud Poulsen, Domenico Maione, C Daniela Rinaudo, Lucilla Baldassarri, John L Telford, Uffe B Skov Sørensen, Members of the DEVANI Study Group, Mogens Kilian

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
5.0field-weighted citation impact, top 5% 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

41 citing papers in PubMed, 78 citations in OpenAlex.

  1. First Report ofMicroorganisms · 2025
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  3. Molecular epidemiology and antibiotic resistance of group BFrontiers in cellular and infection microbiology · 2025
    Article
  4. Article
  5. Article
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  7. Article
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  9. Article
  10. Article
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  12. Streptococcus agalactiae in pregnant women: serotype and antimicrobial susceptibility patterns over five years in Eastern Sicily (Italy).European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2020
    Article
  13. Significant shifts in the distribution of vaccine capsular polysaccharide types and rates of antimicrobial resistance of perinatal group B streptococci within the last decade in St. Petersburg, Russia.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2020
    Article
  14. Article
  15. Article
  16. Antibiotic Resistance and Molecular Epidemiological Characteristics ofThe Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2020
    Article
  17. Article
  18. Review
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  20. Review
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 3 countries.

Kaihu YaoDepartment of Biomedicine, Faculty of Health Sciences, Aarhus University, Aarhus, Denmark.
Knud Poulsen
Domenico Maione
C Daniela Rinaudo
Lucilla Baldassarri
John L Telford
Uffe B Skov Sørensen
Members of the DEVANI Study Group
Mogens Kilian
Aarhus University · DKNovartis (Italy) · ITCapital Medical University · CNIstituto Superiore di Sanità · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We evaluated three different PCR-based capsular gene typing methods applied to 312 human and bovine Streptococcus agalactiae (group B Streptococcus [GBS]) isolates and compared the results to serotyping results obtained by latex agglutination. Among 281 human isolates 27% could not be typed by latex agglutination. All 312 isolates except 5 could be typed by the three PCR methods combined. Two of these methods were multiplex assays. Among the isolates that were typeable by both latex agglutination and capsular gene typing, 94% showed agreement between the two methods. However, each of the PCR methods showed limitations. One of the methods did not include all 10 recognized serotypes, one misidentified eight isolates of serotypes Ib and IV as serotype Ia, and one did not distinguish between serotypes VII and IX. For five isolates that showed aberrant patterns in the capsular gene typing, long-range PCR targeting the cps operon disclosed large insertions or deletions affecting the cps gene cluster. A sensitive flow cytometric assay based on serotype-specific antibodies applied to 76 selected isolates that were nontypeable by latex agglutination revealed that approximately one-half of these did express capsular polysaccharide. A procedure for convenient and reliable capsular gene typing to be included in epidemiological and surveillance studies of S. agalactiae is proposed.

Indexed as

AnimalsBacterial CapsulesCattleFemaleFlow CytometryGenetic LociHumansLatex Fixation TestsMolecular TypingPregnancySerotypingStreptococcal InfectionsStreptococcus agalactiaeVirulence FactorsVirulence Factors

Identifiers

PMID23196363
PMCPMC3553911
OpenAlexW2127709901

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.