Implementation and evaluation of methods for the optimal detection of carbapenem-resistant and colistin-resistant Pseudomonas aeruginosa and Acinetobacter baumannii from stools
- Fournier, Claudine Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Poirel, Laurent Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland - INSERM European Unit (IAME, France), University of Fribourg, Fribourg, Switzerland - Swiss National Reference Center for Emerging Antibiotic Resistance (NARA), University of Fribourg, Fribourg, Switzerland
- Nordmann, Patrice Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland - INSERM European Unit (IAME, France), University of Fribourg, Fribourg, Switzerland - Swiss National Reference Center for Emerging Antibiotic Resistance (NARA), University of Fribourg, Fribourg, Switzerland - Institute for Microbiology, University of Lausanne and University Hospital Centre, Lausanne, Switzerland
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01.10.2020
Published in:
- Diagnostic Microbiology and Infectious Disease. - 2020, vol. 98, no. 2, p. 115121
English
Carbapenem-resistant Acinetobacter baumannii (CRAB) and Pseudomonas aeruginosa (CRPA), as well as polymyxin-resistant A. baumannii (PMR-AB) and P. aeruginosa (PMR-PA), were used to test different enrichment strategies from spiked stools. Three procedures were compared, namely, direct inoculation on selective plates and plating after a 24-h enrichment step in tryptic soy broth with or without antibiotics. Selective agar plates were used including CHROMagar-Pseudomonas supplemented with meropenem (2 mg/L), and CHROMagar-MDR-Acinetobacter agar and CHROMagar COL-APSE plates. Use of enrichment broths significantly enhanced the recovery of CRAB, CRPA, PMR-AB, and PMR-PA. However, supplementing or not the pre-enrichment broth with antibiotics had no impact. The proposed strategy for screening multidrug-resistant nonfermenters is of low cost, is easy to implement, and might be useful for outbreak containment.
- Faculty
- Faculté des sciences et de médecine
- Department
- Médecine 3ème année
- Language
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- English
- Classification
- Biological sciences
- License
- License undefined
- Identifiers
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- RERO DOC 329489
- DOI 10.1016/j.diagmicrobio.2020.115121
- Persistent URL
- https://folia.unifr.ch/unifr/documents/308992
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