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We studied 138 glycopeptide-resistant enterococci (GRE) strains, consisting of 131 glycopeptide-resistant  Enterococcus faecium  (GREfm) and 7 glycopeptide-resistant  Enterococcus faecalis  (GREfs). The GREfm strains were resistant to penicillin, ampicillin, vancomycin, and teicoplanin, while the GREfs strains were only resistant to vancomycin and teicoplanin. The  van A  gene was the only glycopeptide determinant present in all GRE isolates investigated. Genes coding for Hyl and Hyl+ Esp were detected in 39 (29.8%) and 92 (70.2%) of the 131 GREfm isolates, respectively. Three of the 7 GREfs were positive for  gelE + asa 1  genes, 3 for  gel E  gene, and 1 for  asa 1  gene. The genetic relationship between the 138 GRE was analyzed by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). GREfm isolates were clustered in a single genogroup (pulsotype A), and GREfs were clustered in six genogroups (pulsotypes B-G). Among the isolates investigated by MLST, only 18 PCR products were sequenced (12  E. faecium  and 6  E. faecalis ), and 9 sequence types (STs) were identified.

Molecular Characterization of Glycopeptide-Resistant Enterococci from Hospitals of the Picardy Region (France)