Evidence map›Paper›PMID 21647370›Full record

ArticlePloS one2011

SNP-based typing: a useful tool to study Bordetella pertussis populations.

Marjolein van Gent, Marieke J Bart, Han G J van der Heide, Kees J Heuvelman, Teemu Kallonen, Qiushui He, Jussi Mertsola, Abdolreza Advani, Hans O Hallander, Koen Janssens and 2 more

Abstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–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

21 citing papers in PubMed.

  1. Large- and small-scale population structure ofApplied and environmental microbiology · 2025
    Article
  2. Article
  3. Article
  4. Article
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  6. Genetic Diversity of ClinicalJournal of genomics · 2021
    Article
  7. Article
  8. Article
  9. Analysis of Bordetella pertussis clinical isolates circulating in European countries during the period 1998-2012.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2015
    Article
  10. Article
  11. Article
  12. Article
  13. Sequence variation in virulence-related genes of Bordetella pertussis isolates from Poland in the period 1959-2013.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2015
    Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Molecular methods for pathogen and microbial community detection and characterization: current and potential application in diagnostic microbiology.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2012
    Review
  19. 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

12 authors.

Marjolein van GentLaboratory for Infectious Diseases and Screening, Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
Marieke J Bart
Han G J van der Heide
Kees J Heuvelman
Teemu Kallonen
Qiushui He
Jussi Mertsola
Abdolreza Advani
Hans O Hallander
Koen Janssens
Peter W Hermans
Frits R Mooi

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To monitor changes in Bordetella pertussis populations, mainly two typing methods are used; Pulsed-Field Gel Electrophoresis (PFGE) and Multiple-Locus Variable-Number Tandem Repeat Analysis (MLVA). In this study, a single nucleotide polymorphism (SNP) typing method, based on 87 SNPs, was developed and compared with PFGE and MLVA. The discriminatory indices of SNP typing, PFGE and MLVA were found to be 0.85, 0.95 and 0.83, respectively. Phylogenetic analysis, using SNP typing as Gold Standard, revealed false homoplasies in the PFGE and MLVA trees. Further, in contrast to the SNP-based tree, the PFGE- and MLVA-based trees did not reveal a positive correlation between root-to-tip distance and the isolation year of strains. Thus PFGE and MLVA do not allow an estimation of the relative age of the selected strains. In conclusion, SNP typing was found to be phylogenetically more informative than PFGE and more discriminative than MLVA. Further, in contrast to PFGE, it is readily standardized allowing interlaboratory comparisons. We applied SNP typing to study strains with a novel allele for the pertussis toxin promoter, ptxP3, which have a worldwide distribution and which have replaced the resident ptxP1 strains in the last 20 years. Previously, we showed that ptxP3 strains showed increased pertussis toxin expression and that their emergence was associated with increased notification in The Netherlands. SNP typing showed that the ptxP3 strains isolated in the Americas, Asia, Australia and Europe formed a monophyletic branch which recently diverged from ptxP1 strains. Two predominant ptxP3 SNP types were identified which spread worldwide. The widespread use of SNP typing will enhance our understanding of the evolution and global epidemiology of B. pertussis.

Indexed as

Bordetella pertussisElectrophoresis, Gel, Pulsed-FieldEvolution, MolecularPhylogenyPolymorphism, Single NucleotideTandem Repeat Sequences

Identifiers

PMID21647370
PMCPMC3103551

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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.