Evidence map›Paper›PMID 19225096›Full record

ArticleJournal of clinical microbiology2009

Evaluation of a nested-PCR-derived sequence-based typing method applied directly to respiratory samples from patients with Legionnaires' disease.

Christophe Ginevra, Marie Lopez, Françoise Forey, Monique Reyrolle, Helene Meugnier, François Vandenesch, Jerome Etienne, Sophie Jarraud, Maëlle Molmeret

Abstract readComparative StudyEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed.

  1. MixedInfectious disease reports · 2026
    Article
  2. Preliminary report: The most considerable outbreak of Legionnaires' disease in France in the last two decades, Albertville, September 2025.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025
    Article
  3. A community Legionnaires' disease outbreak linked to a collective biomass condensing boiler, France, 2019.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025
    Article
  4. Article
  5. Article
  6. Characterisation ofMicroorganisms · 2024
    Article
  7. Article
  8. A Community Outbreak of Legionnaires' Disease with Two Strains ofInternational journal of environmental research and public health · 2022
    Article
  9. Diagnostics (Basel, Switzerland) · 2021
    Article
  10. Article
  11. Article
  12. Comparative genome analysis reveals a complex population structure of Legionella pneumophila subspecies.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2018
    Article
  13. Article
  14. Article
  15. Article
  16. Design and validation of a qPCR assay for accurate detection and initial serogrouping of Legionella pneumophila in clinical specimens by the ESCMID Study Group for Legionella Infections (ESGLI).European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2015
    Article
  17. Review
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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.

Christophe GinevraUniversité de Lyon, Lyon, France.
Marie Lopez
Françoise Forey
Monique Reyrolle
Helene Meugnier
François Vandenesch
Jerome Etienne
Sophie Jarraud
Maëlle Molmeret

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sequence-based typing (SBT) is a powerful method based on the sequencing of seven genes of Legionella pneumophila isolates. SBT performed directly on clinical samples has been used only in a limited number of cases. In our study, its efficiency was tested with 63 legionellosis respiratory samples. Sixty-three clinical samples, which included 23 samples from sporadic cases and 40 collected during four French outbreaks, confirmed by culture or urinary antigen testing and all positive by L. pneumophila quantitative PCR were subtyped by SBT according to the European Working Group for Legionella Infections standard scheme. Only 28.6% of the samples provided nucleotide sequences by SBT. Nested-PCR-based SBT (NPSBT) applied to the same respiratory samples was thus evaluated with new PCR primers surrounding the first set of primers used for the SBT. Sequencing results were obtained with 90.5% of the samples. Complete allelic profiles (seven genes sequenced) were obtained for 3.2% versus 53.9% of the samples by SBT and NPSBT, respectively. More importantly, of the 28 culture-negative samples, only 4 did not give any sequencing results. Taken together, NPSBT applied directly to clinical specimens significantly improved epidemiological typing compared to the initial SBT, in particular when no isolates are available.

Indexed as

Bacterial Typing TechniquesDNA PrimersFranceGenotypeHumansLegionella pneumophilaLegionnaires' DiseaseMolecular EpidemiologyPolymerase Chain ReactionSensitivity and SpecificitySequence Analysis, DNADNA Primers

Identifiers

PMID19225096
PMCPMC2668346

What OpenQuestion holds

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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.