Faecal carriage of oxyiminocephalosporin-resistant Enterobacteriaceae among paediatric units in different hospitals in the south of France.

The aim of this study was to determine the presence of oxyiminocephalosporin-resistant (OCR) Gram-negative bacilli and extended-spectrum β-lactamase (ESBL)-producing isolates in stool specimens obtained from paediatric patients hospitalised for acute diarrhoea. We conducted a prospective, multicentre study over a period of 6 months in seven hospitals in the south of France. Samplings were carried out from infants admitted for acute diarrhoea with no previous antibiotic treatment in the last week.

Accuracy of 6 commercial systems for identifying clinical Aeromonas isolates.

We compared the accuracy of 6 commercial systems for Aeromonas identification by testing 87 clinical isolates in routine conditions, using partial rpoB gene sequencing as the reference standard. The systems were API-20E, API-32GN, the ID-GN card with the Vitek2 system (bioMérieux, Marcy l'Etoile, France), the identification portion of the NFC47 panel (MicroScan Walk/Away system; Siemens Healthcare, Sacramento, CA), ID69 (Phoenix system; BD Diagnostic Systems, Sparks, MD), and GN2 microplates (Omnilog system; Biolog, Hayward, CA), for which 67 (77.1%), 80 (91.

[Evolution of third-generation cephalosporin resistance in Enterobacteriaceae from 2000 to 2008 in a Perpignan hospital].

The aim of this work was to evaluate the evolution of Enterobacteriaceae resistance to third generation cephalosporin (3CG) from 2000 to 2008 at Perpignan hospital. Were observed: the percentage of strains isolated from short stay wards, intensive care unit and medium and long-term care facility. The percentage of strains isolated from: urine, suppuration, tracheal aspiration, and blood have been evaluated.

[Extended-spectrum beta-lactamases-producing Stenotrophomonas maltophilia strains: CTX-M enzymes detection and virulence study].

Objective: To study the beta-lactamases content of Stenotrophomonas maltophilia strains and to evaluate the virulence potential of these strains with the in vivo Caenorhabditis elegans model.

Methodology: From 1st January 2006 to 31st December 2006, a monitoring programme to study multidrug resistant Gram-negative bacteria including extended-spectrum beta-lactamases (ESBL)-producing S. maltophilia was conducted at Nîmes University Hospital and Perpignan Hospital.

CTX-M beta-lactamase-producing Escherichia coli in French hospitals: prevalence, molecular epidemiology, and risk factors.

In 2004, 65 CTX-M-producing Escherichia coli isolates were collected from infected patients in four French hospitals. The blaCTX-M-15 genes were predominant. Pulsed-field gel electrophoresis highlighted a clonal propagation of CTX-M-15-producing strains belonging to phylogenetic group B2, notably in the community.