Evidence map›Paper›PMID 22798376›Full record

ArticleApplied and environmental microbiology2012

Toxigenic Clostridium difficile PCR ribotypes from wastewater treatment plants in southern Switzerland.

Vincenza Romano, Vincenzo Pasquale, Karel Krovacek, Federica Mauri, Antonella Demarta, Stefano Dumontet

Abstract 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 35 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 2 pooled it
–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

35 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Changes in the Epidemiology of Clostridioides difficile Infection.Infectious disease clinics of North America · 2025
    Review
  5. Community-AcquiredInternational journal of molecular sciences · 2025
    Review
  6. Article
  7. Some Factors Influencing the Number ofInfection and drug resistance · 2025
    Article
  8. Review
  9. Ribotypes and New Virulent Strains Across Europe.Advances in experimental medicine and biology · 2024
    Review
  10. Article
  11. Spore-FormingMicrobiology spectrum · 2023
    Article
  12. Article
  13. Review
  14. Make It LessGenes · 2022
    Review
  15. Article
  16. Article
  17. Article
  18. Epidemiology of community-acquired and recurrentTherapeutic advances in gastroenterology · 2021
    Review
  19. Article
  20. Isolation and characterization of a multidrug-resistantJournal of environmental health science & engineering · 2020
    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

6 authors.

Vincenza RomanoDepartment of Environmental Sciences, Parthenope University of Naples, Naples, Italy. vincenzo.pasquale@uniparthenope.it
Vincenzo Pasquale
Karel Krovacek
Federica Mauri
Antonella Demarta
Stefano Dumontet

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The occurrence of Clostridium difficile in nine wastewater treatment plants in the Ticino Canton (southern Switzerland) was investigated. The samples were collected from raw sewage influents and from treated effluents. Forty-seven out of 55 characterized C. difficile strains belonged to 13 different reference PCR ribotypes (009, 010, 014, 015, 039, 052, 053, 066, 070, 078, 101, 106, and 117), whereas 8 strains did not match any of those available in our libraries. The most frequently isolated ribotype (40%) was 078, isolated from six wastewater treatment plants, whereas ribotype 066, a toxigenic emerging ribotype isolated from patients admitted to hospitals in Europe and Switzerland, was isolated from the outgoing effluent of one plant. The majority of the isolates (85%) were toxigenic. Forty-nine percent of them produced toxin A, toxin B, and the binary toxin (toxigenic profile A(+) B(+) CDT(+)), whereas 51% showed the profile A(+) B(+) CDT(-). Interestingly, eight ribotypes (010, 014, 015, 039, 066, 078, 101, and 106) were among the riboprofiles isolated from symptomatic patients admitted to the hospitals of the Ticino Canton in 2010. Despite the limitation of sampling, this study highlights that toxigenic ribotypes of C. difficile involved in human infections may occur in both incoming and outgoing biological wastewater treatment plants. Such a finding raises concern about the possible contamination of water bodies that receive wastewater treatment plant effluents and about the safe reuse of treated wastewater.

Indexed as

RibotypingBacterial ToxinsClostridioides difficileHumansPolymerase Chain ReactionSwitzerlandVirulence FactorsWastewaterBacterial ToxinsVirulence FactorsWastewater

Identifiers

PMID22798376
PMCPMC3426710

What OpenQuestion holds

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Registered trials

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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.