Evidence map›Paper›PMID 22820326›Full record

ArticleApplied and environmental microbiology2012

Effects of disinfection on Legionella spp., eukarya, and biofilms in a hot water system.

Maha Farhat, Marina Moletta-Denat, Jacques Frère, Séverine Onillon, Marie-Cécile Trouilhé, Enric Robine

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

26 citing papers in PubMed, 64 citations in OpenAlex.

  1. Microorganisms · 2025
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  2. The Contribution ofInternational journal of environmental research and public health · 2024
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  3. Development of heat-shock resistance inApplied and environmental microbiology · 2023
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  7. Knowledge to Predict Pathogens:Microorganisms · 2022
    Review
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  9. Microorganisms · 2021
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  10. Role of biofilms in the survival ofIranian journal of microbiology · 2021
    Article
  11. Article
  12. Intracellular Behaviour of ThreePathogens (Basel, Switzerland) · 2020
    Article
  13. Article
  14. Article
  15. Advances inPathogens (Basel, Switzerland) · 2019
    Article
  16. AttenuatedBioMed research international · 2019
    Article
  17. Article
  18. Article
  19. Article
  20. Factors Mediating Environmental Biofilm Formation byFrontiers in cellular and infection microbiology · 2018
    Review
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

6 authors at 2 institutions in 1 country.

Maha FarhatUniversité Paris-Est, Centre Scientifique et Technique du Bâtiment, Département Energie Santé Environnement, Division Santé, Laboratoire de Recherche et d'Innovation pour l'Hygiène des Bâtiments, Marne-la-Vallée, France. mahafarhat_83@hotmail.com
Marina Moletta-Denat
Jacques Frère
Séverine Onillon
Marie-Cécile Trouilhé
Enric Robine
Centre Scientifique et Technique du Bâtiment · FRÉcologie et Biologie des Interactions · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Legionella species are frequently detected in hot water systems, attached to the surface as a biofilm. In this work, the dynamics of Legionella spp. and diverse bacteria and eukarya associated together in the biofilm, coming from a pilot scale 1 system simulating a real hot water system, were investigated throughout 6 months after two successive heat shock treatments followed by three successive chemical treatments. Community structure was assessed by a fingerprint technique, single-strand conformation polymorphism (SSCP). In addition, the diversity and dynamics of Legionella and eukarya were investigated by small-subunit (SSU) ribosomal cloning and sequencing. Our results showed that pathogenic Legionella species remained after the heat shock and chemical treatments (Legionella pneumophila and Legionella anisa, respectively). The biofilm was not removed, and the bacterial community structure was transitorily affected by the treatments. Moreover, several amoebae had been detected in the biofilm before treatments (Thecamoebae sp., Vannella sp., and Hartmanella vermiformis) and after the first heat shock treatment, but only H. vermiformis remained. However, another protozoan affiliated with Alveolata, which is known as a host cell for Legionella, dominated the eukaryal species after the second heat shock and chemical treatment tests. Therefore, effective Legionella disinfection may be dependent on the elimination of these important microbial components. We suggest that eradicating Legionella in hot water networks requires better study of bacterial and eukaryal species associated with Legionella in biofilms.

Indexed as

Water MicrobiologyBiofilmsBiotaDisinfectantsDisinfectionEukaryotaHot TemperatureLegionella pneumophilaMolecular Sequence DataSequence Analysis, DNADisinfectants

Identifiers

PMID22820326
PMCPMC3457500
OpenAlexW2151329382

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.