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Related Experiment Videos

Serotyping of Clostridium difficile.

S Toma1, G Lesiak, M Magus

  • 1Clinical Bacteriology Section, Ministry of Health, Toronto, Canada.

Journal of Clinical Microbiology
|March 1, 1988
PubMed
Summary

Clostridium difficile serogrouping using slide agglutination identified distinct pathogenic strains. Specific serogroups were linked to severe C. difficile infections in adults and non-pathogenic strains in children, aiding in diagnosis.

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Corrigendum to "<i>Clostridium difficile</i> beyond stools: dog nasal discharge as a possible new vector of bacterial transmission" [Heliyon 5 (5) (May 2019) e01629].

Heliyon·2019

Area of Science:

  • Microbiology
  • Clinical Diagnostics
  • Epidemiology

Background:

  • Clostridium difficile is a significant cause of healthcare-associated infections.
  • Accurate typing methods are crucial for understanding C. difficile epidemiology and pathogenicity.
  • Existing typing methods may require complex laboratory procedures.

Purpose of the Study:

  • To serotype Clostridium difficile isolates using a simple slide agglutination technique.
  • To investigate the correlation between C. difficile serogroups and clinical pathogenicity.
  • To evaluate the utility of serogrouping as an epidemiological marker.

Main Methods:

  • Serotyping of 246 live Clostridium difficile cultures using a slide agglutination technique.
  • Production of fifteen grouping antisera for C. difficile.

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  • Analysis of protein profiles and restriction endonuclease patterns for cross-reactive strains.

    • Main Results:

    • Fifteen grouping antisera successfully serotyped 98% of C. difficile cultures.
    • Cytotoxigenic strains (serogroups A, G, H, K, S1, S4) were primarily isolated from adult patients with colitis or diarrhea.
    • Nontoxigenic strains (serogroups D, Cd-5) were mainly found in asymptomatic neonates and children.
    • Cross-reactions were observed among certain serogroups, necessitating further analysis.

    Conclusions:

    • Slide agglutination is a simple and effective method for routine C. difficile typing.
    • C. difficile serogrouping can serve as a valuable epidemiological marker.
    • Serogrouping may help elucidate the clinical relevance and pathogenicity of C. difficile isolates.