Evidence map›Paper›PMID 17337541›Full record

ArticleApplied and environmental microbiology2007

Survival of Mycobacterium avium, Legionella pneumophila, Escherichia coli, and caliciviruses in drinking water-associated biofilms grown under high-shear turbulent flow.

Markku J Lehtola, Eila Torvinen, Jaana Kusnetsov, Tarja Pitkänen, Leena Maunula, Carl-Henrik von Bonsdorff, Pertti J Martikainen, Sandra A Wilks, C William Keevil, Ilkka T Miettinen

Abstract readComparative Study
In one paragraph

Article in Applied and environmental microbiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Frontiers in environmental science · 2021
    Article
  7. Article
  8. Article
  9. Article
  10. Two Drinking Water Outbreaks Caused by Wastewater Intrusion Including Sapovirus in Finland.International journal of environmental research and public health · 2019
    Article
  11. Chlorine and Monochloramine Disinfection ofApplied and environmental microbiology · 2019
    Article
  12. Article
  13. Article
  14. Factors Mediating Environmental Biofilm Formation byFrontiers in cellular and infection microbiology · 2018
    Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  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

10 authors.

Markku J LehtolaEnvironmental Microbiology Laboratory, National Public Health Institute, Department of Environmental Health, P.O. Box 95, FI-70701 Kuopio, Finland. Markku.Lehtola@ktl.fi
Eila Torvinen
Jaana Kusnetsov
Tarja Pitkänen
Leena Maunula
Carl-Henrik von Bonsdorff
Pertti J Martikainen
Sandra A Wilks
C William Keevil
Ilkka T Miettinen

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Most of the bacteria in drinking water distribution systems are associated with biofilms. In biofilms, their nutrient supply is better than in water, and biofilms can provide shelter against disinfection. We used a Propella biofilm reactor for studying the survival of Mycobacterium avium, Legionella pneumophila, Escherichia coli, and canine calicivirus (CaCV) (as a surrogate for human norovirus) in drinking water biofilms grown under high-shear turbulent-flow conditions. The numbers of M. avium and L. pneumophila were analyzed with both culture methods and with peptide nucleic acid fluorescence in situ hybridization (FISH) methods. Even though the numbers of pathogens in biofilms decreased during the experiments, M. avium and L. pneumophila survived in biofilms for more than 2 to 4 weeks in culturable forms. CaCV was detectable with a reverse transcription-PCR method in biofilms for more than 3 weeks. E. coli was detectable by culture for only 4 days in biofilms and 8 days in water, suggesting that it is a poor indicator of the presence of certain waterborne pathogens. With L. pneumophila and M. avium, culture methods underestimated the numbers of bacteria present compared to the FISH results. This study clearly proved that pathogenic bacteria entering water distribution systems can survive in biofilms for at least several weeks, even under conditions of high-shear turbulent flow, and may be a risk to water consumers. Also, considering the low number of virus particles needed to result in an infection, their extended survival in biofilms must be taken into account as a risk for the consumer.

Indexed as

Water MicrobiologyWater MovementsWater SupplyBiofilmsCaliciviridaeDNA PrimersEscherichia coliIn Situ Hybridization, FluorescenceLegionella pneumophilaMycobacterium aviumDNA Primers

Identifiers

PMID17337541
PMCPMC1892874

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.