Evidence map›Paper›PMID 25539682›Full record

ArticleBMC genomics2014

The use of genome wide association methods to investigate pathogenicity, population structure and serovar in Haemophilus parasuis.

Kate J Howell, Lucy A Weinert, Roy R Chaudhuri, Shi-Lu Luan, Sarah E Peters, Jukka Corander, David Harris, Øystein Angen, Virginia Aragon, Albert Bensaid and 9 more

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 12% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Pooled it
  2. Global whole-genome, phylodynamic, and machine-learning analysis ofApplied and environmental microbiology · 2026
    Article
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  4. Article
  5. A Triplex Real-Time PCR Assay for Simultaneous Detection ofTransboundary and emerging diseases · 2026
    Article
  6. Article
  7. Pathotyping and molecular serotyping of clinical isolates of Glaesserella parasuis in Taiwan.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  8. Article
  9. Molecular Characterization and Phylogenetic Analysis ofPathogens (Basel, Switzerland) · 2023
    Article
  10. Pan-genome wide association study ofFrontiers in microbiology · 2023
    Article
  11. Identification ofPathogens (Basel, Switzerland) · 2022
    Article
  12. Article
  13. Comparison of theFrontiers in veterinary science · 2021
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Association betweenPeerJ · 2019
    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

19 authors at 9 institutions in 3 countries.

Kate J HowellDepartment of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK. kjh52@cam.ac.uk.
Lucy A WeinertDepartment of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK. lucy.weinert@gmail.com.
Roy R ChaudhuriDepartment of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield, S10 2TN, UK. r.chaudhuri@sheffield.ac.uk.
Shi-Lu LuanDepartment of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK. sl470@cam.ac.uk.
Sarah E PetersDepartment of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK. sep34@cam.ac.uk.
Jukka CoranderDepartment of Mathematics and Statistics, University of Helsinki, Helsinki, 00100, Finland. jukka.corander@helsinki.fi.
David HarrisThe Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SA, UK. deh@sanger.ac.uk.
Øystein AngenNorwegian Veterinary Institute, N-0106, Oslo, Norway. Oystein.Angen@vetinst.no.
Virginia AragonCentre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autònoma de Barcelona, 08193, Bellaterra, and, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Barcelona, Spain. Virginia.Aragon@cresa.uab.cat.
Albert BensaidCentre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autònoma de Barcelona, 08193, Bellaterra, and, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Barcelona, Spain. albert.bensaid@cresa.uab.es.
Susanna M WilliamsonAnimal Health and Veterinary Laboratories Agency (AHVLA), Rougham Hill, Bury St Edmunds, Suffolk, IP33 2RX, UK. Susanna.Williamson@ahvla.gsi.gov.uk.
Julian ParkhillThe Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SA, UK. parkhill@sanger.ac.uk.
Paul R LangfordDepartment of Medicine, Section of Paediatrics, Imperial College London, St. Mary's Campus, London, W2 1PG, UK. p.langford@imperial.ac.uk.
Andrew N RycroftThe Royal Veterinary College, Hawkshead Campus, Hatfield, AL9 7TA, Hertfordshire, UK. ARycroft@rvc.ac.uk.
Brendan W WrenFaculty of Infectious & Tropical Diseases, London School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK. brendan.wren@lshtm.ac.uk.
Matthew T G HoldenSchool of Medicine, University of St. Andrews, St Andrews, KY16 9TF, UK. mh3@sanger.ac.uk.
Alexander W TuckerDepartment of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK. awt1000@cam.ac.uk.
Duncan J MaskellDepartment of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 0ES, UK. djm47@cam.ac.uk.
BRADP1T Consortium
University of Cambridge · GBWellcome Sanger Institute · GBAnimal and Plant Health Agency · GBImperial College London · GBLondon School of Hygiene & Tropical Medicine · GBNorwegian Veterinary Institute · NORoyal Veterinary College · GBStatistics Finland · FIUniversity of St Andrews · GB

Funding

Biotechnology and Biological Sciences Research Council BB/G003203/1Biotechnology and Biological Sciences Research Council BB/G018553/1Biotechnology and Biological Sciences Research Council BB/G019177/1Biotechnology and Biological Sciences Research Council BB/G019274/1Biotechnology and Biological Sciences Research Council BB/G020744/1
6 · The paper itself

Abstract

backgroundHaemophilus parasuis is the etiologic agent of Glässer's disease in pigs and causes devastating losses to the farming industry. Whilst some hyper-virulent isolates have been described, the relationship between genetics and disease outcome has been only partially established. In particular, there is weak correlation between serovar and disease phenotype. We sequenced the genomes of 212 isolates of H. parasuis and have used this to describe the pan-genome and to correlate this with clinical and carrier status, as well as with serotype.

resultsRecombination and population structure analyses identified five groups with very high rates of recombination, separated into two clades of H. parasuis with no signs of recombination between them. We used genome-wide association methods including discriminant analysis of principal components (DAPC) and generalised linear modelling (glm) to look for genetic determinants of this population partition, serovar and pathogenicity. We were able to identify genes from the accessory genome that were significantly associated with phenotypes such as potential serovar specific genes including capsule genes, and 48 putative virulence factors that were significantly different between the clinical and non-clinical isolates. We also show that the presence of many previously suggested virulence factors is not an appropriate marker of virulence.

conclusionsThese genes will inform the generation of new molecular diagnostics and vaccines, and refinement of existing typing schemes and show the importance of the accessory genome of a diverse species when investigating the relationship between genotypes and phenotypes.

Indexed as

Genome-Wide Association StudyAnimalsGenome, ViralHaemophilus parasuisRecombination, GeneticSwineVirulence

Identifiers

PMID25539682
PMCPMC4532294
OpenAlexW1898161223

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.