Article

Widespread occurrence of ampicillin-susceptible Enterococcus faecium and Enterococcus lactis clinical isolates with low MICs to cephalosporins from Spain and Portugal

2026-08-28

Abstract excerpt

Reduced cephalosporin resistance in Enterococcus faecium has traditionally been reported in laboratory mutants and, more recently, in a single clinical ampicillin-susceptible (AmpS) isolate. Herein, we investigated whether this phenotype is widespread by analysing 95 clinical enterococcal isolates (78 AmpS and 17 ampicillin resistant [AmpR]) collected from three hospitals in Spain and Portugal (2009-2025). Low cef...

Topics

Open a Topic to create a Post that cites this publication.

Uncategorized literature

Identifiers and source

Literature Corpus work: a8559685-55bf-565b-8a9c-78bb306c6bd2
DOI: 10.64898/2026.08.28.747786

Open publication

Related research

Semantic proximity does not establish scientific evidence. Graph snapshot: 2026-09-29.

Click a neighbor to travelStep 1 · 12 closest

Widespread occurrence of ampicillin-susceptible Enterococcus faecium and Enterococcus lactis clinical isolates with low MICs to cephalosporins from Spain and PortugalDOI 10.64898/2026.08.28.747786Read

Penicillin-resistant, ampicillin-susceptible Enterococcus faecalis of hospital origin: pbp4 gene polymorphism and genetic diversity.Semantic proximity Read

Single point mutations in global regulatory genes restore cephalosporin resistance in a low-MIC Enterococcus faecium natural isolate.Semantic proximity Read

Distribution of putative virulence markers in Enterococcus faecium: towards a safety profile reviewSemantic proximity Read

Evaluation of polymorphisms in pbp4 gene and genetic diversity in penicillin-resistant, ampicillin-susceptible Enterococcus faecalis from hospitals in different states in Brazil.Semantic proximity Read

Co-diversification of Enterococcus faecium Core Genomes and PBP5: Evidences of pbp5 Horizontal TransferSemantic proximity Read

Ampicillin-susceptible Enterococcus faecium infections: clinical features, causal clades, and contribution of MALDI-TOF to early detectionSemantic proximity Read

Single point mutations in global regulatory genes restore cephalosporin resistance in a low-MIC <i>Enterococcus faecium</i> natural isolateSemantic proximity Read

Characterizing carbapenemase-producing Escherichia coli isolates from Spain: high genetic heterogeneity and wide geographical spread.Semantic proximity Read

Antibiotic resistance in Enterococcus faecium clinical isolates.Semantic proximity Read

Genome analysis of enterobacteriaceae with non-wild type susceptibility to third-generation cephalosporins recovered from diseased dogs and cats in Europe.Semantic proximity Read

Survival of infection with TEM β-lactamase-producing Escherichia coli with Pan-β-lactam resistanceSemantic proximity Read

Comparison of phenotypic and WGS-derived antimicrobial resistance profiles of enteroaggregative Escherichia coli isolated from cases of diarrhoeal disease in England, 2015-16.Semantic proximity Read