Evaluation of a novel molecular assay to diagnose toxigenic strains of Clostridium difficile.
Anaerobe
; 52: 111-114, 2018 Aug.
Article
in En
| MEDLINE
| ID: mdl-29936109
ABSTRACT
The objective of this study was to evaluate the Amplidiag C. difficile+027® assay, a new molecular method that detects toxin B gene in stool samples and identifies the hypervirulent 027 strain, to diagnose Clostridium difficile infections. The assay was compared to the reference method i.e. toxigenic culture. Amplidiag C. difficile+027® assay was prospectively evaluated from 309 diarrheal stool specimens of patients suspected of C. difficile infection. Forty-five (14.6%) stools were positive by toxigenic culture and 11 (3.6%) stools gave discordant results with the molecular method. PR027 was not recovered during the study. After resolving the discrepant results, the sensitivity, specificity, positive and negative predictive values of Amplidiag C. difficile+027® assay were 91.1% [CI 95% 77.9-97.1], 99.6% [CI 95% 97.6-100], 97.6% [CI 95% 85.9-99.9] and 98.5% [CI 95% 96-99.5], respectively compared to toxigenic culture. This assay is sensitive compared to the toxigenic culture.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bacterial Toxins
/
Polymerase Chain Reaction
/
Clostridioides difficile
/
Clostridium Infections
/
Molecular Typing
Type of study:
Diagnostic_studies
/
Evaluation_studies
/
Observational_studies
/
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Anaerobe
Year:
2018
Document type:
Article