Evidence map›Paper›PMID 16597985›Full record

ArticleApplied and environmental microbiology2006

Quantitative real-time Legionella PCR for environmental water samples: data interpretation.

Philippe Joly, Pierre-Alain Falconnet, Janine André, Nicole Weill, Monique Reyrolle, François Vandenesch, Max Maurin, Jerome Etienne, Sophie Jarraud

Abstract readEvaluation Study
In one paragraph

Article in Applied and environmental microbiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing 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

40 citing papers in PubMed.

  1. PCR-BasedMicroorganisms · 2025
    Article
  2. Review
  3. Article
  4. Article
  5. Clinical and Laboratory Diagnosis of Legionella Pneumonia.Diagnostics (Basel, Switzerland) · 2023
    Review
  6. Design of an optical nanobiosensor for detection ofIranian journal of microbiology · 2022
    Article
  7. Evaluation of an Environmental Transport Medium forInternational journal of environmental research and public health · 2021
    Article
  8. Article
  9. Article
  10. Pathogens (Basel, Switzerland) · 2020
    Article
  11. Article
  12. Prevalence ofIranian journal of medical sciences · 2018
    Review
  13. Article
  14. Diagnostic testing for Legionnaires' disease.Annals of clinical microbiology and antimicrobials · 2017
    Review
  15. Article
  16. Evaluation of the microbiological quality of reclaimed water produced from a lagooning system.Environmental science and pollution research international · 2016
    Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Philippe JolyCentre National de Référence des Legionella, INSERM E-0230, Faculté de Médecine, IFR 62, 7 rue Guillaume-Paradin, 69372 Lyon Cedex 08, France.
Pierre-Alain Falconnet
Janine André
Nicole Weill
Monique Reyrolle
François Vandenesch
Max Maurin
Jerome Etienne
Sophie Jarraud

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Quantitative Legionella PCRs targeting the 16S rRNA gene (specific for the genus Legionella) and the mip gene (specific for the species Legionella pneumophila) were applied to a total of 223 hot water system samples (131 in one laboratory and 92 in another laboratory) and 37 cooling tower samples (all in the same laboratory). The PCR results were compared with those of conventional culture. 16S rRNA gene PCR results were nonquantifiable for 2.8% of cooling tower samples and up to 39.1% of hot water system samples, and this was highly predictive of Legionella CFU counts below 250/liter. PCR cutoff values for identifying hot water system samples containing >10(3) CFU/liter legionellae were determined separately in each laboratory. The cutoffs differed widely between the laboratories and had sensitivities from 87.7 to 92.9% and specificities from 77.3 to 96.5%. The best specificity was obtained with mip PCR. PCR cutoffs could not be determined for cooling tower samples, as the results were highly variable and often high for culture-negative samples. Thus, quantitative Legionella PCR appears to be applicable to samples from hot water systems, but the positivity cutoff has to be determined in each laboratory.

Indexed as

Air ConditioningColony Count, MicrobialCulture MediaDNA, BacterialFresh WaterLaboratoriesLegionellaLegionella pneumophilaPolymerase Chain ReactionReference StandardsRNA, Ribosomal, 16SSensitivity and SpecificityWater SupplyCulture MediaDNA, BacterialRNA, Ribosomal, 16S

Identifiers

PMID16597985
PMCPMC1449029

What OpenQuestion holds

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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.