Evidence map›Paper›PMID 22895033›Full record

ArticleJournal of clinical microbiology2012

Specific detection of enteroaggregative hemorrhagic Escherichia coli O104:H4 strains by use of the CRISPR locus as a target for a diagnostic real-time PCR.

Sabine Delannoy, Lothar Beutin, Ylanna Burgos, Patrick Fach

Open access · bronzeAbstract readEvaluation 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 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
7.5field-weighted citation impact, top 2% 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

42 citing papers in PubMed, 75 citations in OpenAlex.

  1. TheEcoSal Plus · 2025
    Review
  2. Genomic Markers Distinguishing Shiga Toxin-ProducingPathogens (Basel, Switzerland) · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Genetic Analysis of Virulence Potential ofFrontiers in microbiology · 2018
    Article
  15. Article
  16. Suppressing the CRISPR/Cas adaptive immune system in bacterial infections.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2017
    Review
  17. Article
  18. Draft Genome Sequences ofGenome announcements · 2017
    Article
  19. Review
  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

4 authors at 2 institutions in 2 countries.

Sabine DelannoyFrench Agency for Food, Environmental and Occupational Health and Safety, Food Safety Laboratory, Maisons-Alfort, France.
Lothar Beutin
Ylanna Burgos
Patrick Fach
Agence Nationale de Sécurité Sanitaire de l’Alimentation, de l’Environnement et du Travail · FRFederal Institute for Risk Assessment · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In 2011, a large outbreak of an unusual bacterial strain occurred in Europe. This strain was characterized as a hybrid of an enteroaggregative Escherichia coli (EAEC) and a Shiga toxin-producing E. coli (STEC) strain of the serotype O104:H4. Here, we present a single PCR targeting the clustered regularly interspaced short palindromic repeats locus of E. coli O104:H4 (CRISPR(O104:H4)) for specific detection of EAEC STEC O104:H4 strains from different geographical locations and time periods. The specificity of the CRISPR(O104:H4) PCR was investigated using 1,321 E. coli strains, including reference strains for E. coli O serogroups O1 to O186 and flagellar (H) types H1 to H56. The assay was compared for specificity using PCR assays targeting different O104 antigen-encoding genes (wbwC(O104), wzx(O104), and wzy(O104)). The PCR assays reacted with all types of E. coli O104 strains (O104:H2, O104:H4, O104:H7, and O104:H21) and with E. coli O8 and O9 strains carrying the K9 capsular antigen and were therefore not specific for detection of the EAEC STEC O104:H4 type. A single PCR developed for the CRISPR(O104:H4) target was sufficient for specific identification and detection of the 48 tested EAEC STEC O104:H4 strains. The 35 E. coli O104 strains expressing H types other than H4 as well as 8 E. coli strains carrying a K9 capsular antigen tested all negative for the CRISPR(O104:H4) locus. Only 12 (0.94%) of the 1,273 non-O104:H4 E. coli strains (serotypes Ont:H2, O43:H2, O141:H2, and O174:H2) reacted positive in the CRISPR(O104:H4) PCR (99.06% specificity).

Indexed as

Bacteriological TechniquesDNA, BacterialEnterohemorrhagic Escherichia coliEscherichia coli InfectionsEuropeHumansMolecular Diagnostic TechniquesMolecular Sequence DataReal-Time Polymerase Chain ReactionSensitivity and SpecificitySequence Analysis, DNADNA, Bacterial

Identifiers

PMID22895033
PMCPMC3486251
OpenAlexW2072126217

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.