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Sambri V, Gateau C, Zannoli S, Dirani G, Couturier J, Op den Buijs I, Roymans R, Hallet E, Arnold M, Zumoberhaus A, Steiner S, van de Bovenkamp J, Altwegg M, Berlinger L, Barbut F. Diagnosing Clostridioides difficile infections with molecular diagnostics: multicenter evaluation of revogene C. difficile assay. Eur J Clin Microbiol Infect Dis 2020; 39:1169-1175. [PMID: 32062723 PMCID: PMC7225180 DOI: 10.1007/s10096-020-03829-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 01/22/2020] [Indexed: 01/05/2023]
Abstract
Clostridioides difficile infections are a significant threat to our healthcare system, and rapid and accurate diagnostics are crucial to implement the necessary infection prevention and control measurements. Nucleic acid amplification tests are such reliable diagnostic tools for the detection of toxigenic Clostridioides difficile strains directly from stool specimens. In this multicenter evaluation, we determined the performance of the revogene C. difficile assay. The analysis was conducted on prospective stool specimens collected from six different sites in Europe. The performance of the revogene C. difficile assay was compared to the different routine diagnostic methods and, for a subset of the specimens, against toxigenic culture. In total, 2621 valid stool specimens were tested, and the revogene C. difficile assay displayed a sensitivity/specificity of 97.1% [93.3-99.0] and 98.9% [98.5-99.3] for identification of Clostridioides difficile infection. Discrepancy analysis using additional methods improved this performance to 98.8% [95.8-99.9] and 99.6% [99.2-99.8], respectively. In comparison to toxigenic culture, the revogene C. difficile assay displayed a sensitivity/specificity of 93.0% [86.1-97.1] and 99.5% [98.7-99.9], respectively. These results indicate that the revogene C. difficile assay is a robust and reliable aid in the diagnosis of Clostridioides difficile infections.
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Affiliation(s)
- Vittorio Sambri
- Operative unit of Clinical Microbiology, Regional Reference Centre for Microbiological Emergencies, S. Orsola-Malpighi University Hospital, Bologna, Italy.
- Unit of Microbiology, The Great Romagna Hub Laboratory, Pievesestina, FC, Italy.
- DIMES, University of Bologna, Bologna, Italy.
| | - Cécile Gateau
- National Reference Laboratory for C. difficile, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, INSERM U-1139, University Paris Descartes, Paris, France
| | - Silvia Zannoli
- Operative unit of Clinical Microbiology, Regional Reference Centre for Microbiological Emergencies, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Giorgio Dirani
- Operative unit of Clinical Microbiology, Regional Reference Centre for Microbiological Emergencies, S. Orsola-Malpighi University Hospital, Bologna, Italy
| | - Jeanne Couturier
- National Reference Laboratory for C. difficile, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, INSERM U-1139, University Paris Descartes, Paris, France
| | | | - René Roymans
- Laboratory of Medical Microbiology, Stichting PAMM, Veldhoven, Netherlands
| | - Emma Hallet
- Great Western Hospital, Swindon, UK
- Royal Devon and Exeter Hospital, Exeter, UK
| | | | | | | | | | | | | | - Frédéric Barbut
- National Reference Laboratory for C. difficile, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, INSERM U-1139, University Paris Descartes, Paris, France
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