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João Pires, Esther Kuenzli, Sara Kasraian, Regula Tinguely, Hansjakob Furrer, Markus Hilty, Christoph Hatz, Andrea Endimiani
We aimed to assess the intestinal colonization dynamics by multiple extended-spectrum cephalosporin-resistant Enterobacteriaceae (ESC-R-Ent) clones in Swiss travelers to India, a country with high prevalence of these multidrug-resistant pathogens. Fifteen healthy volunteers (HVs) colonized with ESC-R-Ent after traveling to India who provided stools before, after, and at 3- and 6-month follow-up are presented in this study. Stools were enriched in a LB broth containing 3 mg/L cefuroxime and plated in standard selective media (BLSE, ChromID ESBL, Supercarba) to detect carbapenem- and/or ESC-R-Ent...
2016: Frontiers in Microbiology
K Zurfluh, L Poirel, P Nordmann, J Klumpp, R Stephan
BACKGROUND: The emergence and worldwide spread of carbapenemase-producing Enterobacteriaceae is of great concern to public health services. The aim of this study was to investigate the occurrence of carbapenemase-producing Enterobacteriaceae in fresh vegetables and spices imported from Asia to Switzerland. FINDINGS: Twenty-two different fresh vegetable samples were purchased in March 2015 from different retail shops specializing in Asian food. The vegetables included basil leaves, bergamont leaves, coriander, curry leaves, eggplant and okra (marrow)...
2015: Antimicrobial Resistance and Infection Control
Katrin Zurfluh, Magdalena T Nüesch-Inderbinen, Laurent Poirel, Patrice Nordmann, Herbert Hächler, Roger Stephan
BACKGROUND: The emergence and worldwide spread of carbapenemase-producing Enterobacteriaceae is of great concern to public health services. The aim of this study was to investigate the occurrence of carbapenemase-producing Enterobacteriaceae in the community in Switzerland. FINDINGS: One thousand and eighty-six stool samples of healthy humans (staff members of a food-processing company which were screened for the occurrence of salmonellae) were collected in September 2014...
2015: Antimicrobial Resistance and Infection Control
Delphine Girlich, Claire Anglade, Gilles Zambardi, Patrice Nordmann
Comparative evaluation of the recently developed chromogenic culture medium chromID OXA-48 (bioMérieux) with chromID CARBA (bioMérieux) and SUPERCARBA showed that chromID OXA-48 and SUPERCARBA media have the highest sensitivity for detection of OXA-48 producing Enterobacteriaceae (91% and 93%) comparatively to chromID CARBA (21 %). The chromID OXA-48 has the highest specificity, with 100%, as compared to 53% and 68% for the SUPERCARBA and chromID CARBA media for detecting those OXA-48 producers.
December 2013: Diagnostic Microbiology and Infectious Disease
D Girlich, N Bouihat, L Poirel, A Benouda, P Nordmann
Carbapenemase-producing Enterobacteriaceae isolates are being increasingly reported, particularly from countries surrounding the Mediterranean area. We aimed to quantify the prevalence of carbapenemase- and extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae in rectal swabs from hospitalized patients in a University hospital in Morocco, and to compare the performance of three screening media: ChromID ESBL (bioMérieux), Brilliance CRE (OXOID, Thermofisher) and SUPERCARBA (home made). Genetic detection and plasmid analysis were performed by PCR and sequencing...
April 2014: Clinical Microbiology and Infection
Delphine Girlich, Laurent Poirel, Patrice Nordmann
The recently developed SUPERCARBA medium was evaluated together with 2 commercially available selective culture media containing carbapenems: CHROMagar KPC (CHROMagar) and Brilliance CRE (Oxoid, Thermofisher Scientific). A total of 142 enterobacterial isolates were tested, including 131 isolates with reduced susceptibility to carbapenems. The SUPERCARBA medium has the highest sensitivity (96.5%) (detecting virtually all carbapenemase producers including OXA-48-like producers) as compared to Brilliance CRE (76...
February 2013: Diagnostic Microbiology and Infectious Disease
Patrice Nordmann, Laurent Poirel
The spread of carbapenem-hydrolysing β-lactamases in Enterobacteriaceae is becoming a major public health issue. These β-lactamases hydrolyse almost all β-lactams, are plasmid-encoded and are easily transferable among enterobacterial species. They are found in multidrug-resistant isolates. Detection of these isolates from infected specimens first relies on careful recognition of any decreased susceptibility to carbapenems. After this, rapid biochemical identification of carbapenemase producers using the novel Carba NP test should be performed...
March 2013: Journal of Antimicrobial Chemotherapy
Thierry Naas, Garance Cotellon, Ayla Ergani, Patrice Nordmann
OBJECTIVES: Outbreaks of OXA-48-like carbapenemase producers are increasingly reported in many European countries and are often the result of difficulties in detection, especially for isolates with MICs of carbapenems that remain in the susceptibility range. METHODS: An in-house real-time quantitative PCR (qPCR) assay using TaqMan chemistry to detect bla(OXA-48-like) genes was compared with bacterial culturing on ChromID ESBL and SUPERCARBA media of spiked stool samples with several species producing OXA-48 variants...
January 2013: Journal of Antimicrobial Chemotherapy
Patrice Nordmann, Delphine Girlich, Laurent Poirel
A Drigalski agar-based culture medium containing an ertapenem, cloxacillin, and zinc sulfate (Supercarba medium) was tested for screening carbapenemase-producing members of the family Enterobacteriaceae. OXA-48 (n = 44), NDM (n = 25), VIM or IMP (n = 27), and KPC producers (n = 18) were detected with a low detection limit. Its overall sensitivity (95.6%) was higher than those of the currently available ChromID ESBL (bioMérieux) and CHROMagar KPC (CHROMagar) screening media. The Supercarba medium provides a significant improvement for detection of the most common types of carbapenemase producers...
August 2012: Journal of Clinical Microbiology
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