Evidence map›Paper›PMID 22378905›Full record

ArticleJournal of clinical microbiology2012

Diagnostic strategy for identifying avian pathogenic Escherichia coli based on four patterns of virulence genes.

Catherine Schouler, Brigitte Schaeffer, Annie Brée, Azucena Mora, Ghizlane Dahbi, François Biet, Eric Oswald, Jacques Mainil, Jorge Blanco, Maryvonne Moulin-Schouleur

Abstract readValidation Study
In one paragraph

Article in Journal of clinical microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Molecular Characterization and Antibiotic Resistance of Avian PathogenicAnimals : an open access journal from MDPI · 2025
    Article
  5. Article
  6. Emerging hybrid shigatoxigenic and enteropathogenicClinical microbiology reviews · 2025
    Review
  7. Article
  8. Article
  9. Decoding the genome and epigenome of avianFrontiers in veterinary science · 2025
    Article
  10. Antimicrobial Susceptibility Profiles of CommensalAntibiotics (Basel, Switzerland) · 2024
    Article
  11. Avian pathogenicVeterinary world · 2024
    Review
  12. Article
  13. First report of detection ofIranian journal of veterinary research · 2024
    Article
  14. Review
  15. Article
  16. Pathotypes and Phenotypic Resistance to Antimicrobials ofPathogens (Basel, Switzerland) · 2023
    Article
  17. Antimicrobial Efficacy of Cinnamon Essential Oil against Avian PathogenicAnimals : an open access journal from MDPI · 2023
    Article
  18. Article
  19. Article
  20. Virulence Factors and Antimicrobial Resistance Profile ofAnimals : an open access journal from MDPI · 2022
    Article

12 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

10 authors.

Catherine SchoulerINRA, UR1282 Infectiologie Animale et Santé Publique, Nouzilly, France. catherine.schouler@tours.inra.fr
Brigitte Schaeffer
Annie Brée
Azucena Mora
Ghizlane Dahbi
François Biet
Eric Oswald
Jacques Mainil
Jorge Blanco
Maryvonne Moulin-Schouleur

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In order to improve the identification of avian pathogenic Escherichia coli (APEC) strains, an extensive characterization of 1,491 E. coli isolates was conducted, based on serotyping, virulence genotyping, and experimental pathogenicity for chickens. The isolates originated from lesions of avian colibacillosis (n = 1,307) or from the intestines of healthy animals (n = 184) from France, Spain, and Belgium. A subset (460 isolates) of this collection was defined according to their virulence for chicks. Six serogroups (O1, O2, O5, O8, O18, and O78) accounted for 56.5% of the APEC isolates and 22.5% of the nonpathogenic isolates. Thirteen virulence genes were more frequently present in APEC isolates than in nonpathogenic isolates but, individually, none of them could allow the identification of an isolate as an APEC strain. In order to take into account the diversity of APEC strains, a statistical analysis based on a tree-modeling method was therefore conducted on the sample of 460 pathogenic and nonpathogenic isolates. This resulted in the identification of four different associations of virulence genes that enables the identification of 70.2% of the pathogenic strains. Pathogenic strains were identified with an error margin of 4.3%. The reliability of the link between these four virulence patterns and pathogenicity for chickens was validated on a sample of 395 E. coli isolates from the collection. The genotyping method described here allowed the identification of more APEC isolates with greater reliability than the classical serotyping methods currently used in veterinary laboratories.

Indexed as

Molecular TypingAnimalsBelgiumChickensDucksEscherichia coliEscherichia coli InfectionsEscherichia coli ProteinsFranceGenotypePoultry DiseasesSerotypingSpainTurkeysVirulenceVirulence FactorsEscherichia coli ProteinsVirulence Factors

Identifiers

PMID22378905
PMCPMC3347144

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.