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Applied and Environmental Microbiology
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AmpC

  • Prevalence of Cefotaxime-Resistant <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Isolates from Healthy Cattle and Sheep in Northern Spain: Phenotypic and Genome-Based Characterization of Antimicrobial Susceptibility
    Public and Environmental Health Microbiology
    Prevalence of Cefotaxime-Resistant Escherichia coli Isolates from Healthy Cattle and Sheep in Northern Spain: Phenotypic and Genome-Based Characterization of Antimicrobial Susceptibility

    Extended-spectrum β-lactamase (ESBL)- and AmpC β-lactamase (AmpC)-producing E. coli isolates have emerged in recent years as some of the fastest spreading antimicrobial resistance determinants in humans and food-producing animals, becoming a concern for animal and public health. This study provided insight into the prevalence of cefotaxime-resistant...

    Maitane Tello, Medelin Ocejo, Beatriz Oporto, Ana Hurtado
  • Fecal Carriage of Extended-Spectrum-β-Lactamase/AmpC-Producing <em>Escherichia coli</em> in Horses
    Public and Environmental Health Microbiology
    Fecal Carriage of Extended-Spectrum-β-Lactamase/AmpC-Producing Escherichia coli in Horses

    Extended-spectrum β-lactamases (ESBLs) are widespread in human and animal populations and in the environment. Many different ESBL variants exist. The dissemination of ESBLs within and between populations and the environment is also largely influenced by genetic mobile elements (e.g., plasmids) that facilitate spread of these ESBLs. In order to identify potential attributable ESBL sources for, e.g., the human population, it is important...

    Joost Hordijk, Evangelia Farmakioti, Lidwien A. M. Smit, Birgitta Duim, Haitske Graveland, Mathijs J. P. Theelen, Jaap A. Wagenaar
  • A New Suite of Allelic-Exchange Vectors for the Scarless Modification of Proteobacterial Genomes
    Methods | Spotlight
    A New Suite of Allelic-Exchange Vectors for the Scarless Modification of Proteobacterial Genomes

    Targeted modification of bacterial genomes is critical for genetic analysis of microorganisms. Allelic exchange is a technique that relies on homologous recombination to replace native loci with engineered sequences. However, current allelic-exchange vectors often enable only weak selection for successful homologous recombination. We developed a suite of new allelic-exchange vectors, pTOX, which were validated in several medically...

    Jacob E. Lazarus, Alyson R. Warr, Carole J. Kuehl, Rachel T. Giorgio, Brigid M. Davis, Matthew K. Waldor
  • Open Access
    Public and Environmental Health Microbiology
    Transfer Potential of Plasmids Conferring Extended-Spectrum-Cephalosporin Resistance in Escherichia coli from Poultry
    Solveig Sølverød Mo, Marianne Sunde, Hanna Karin Ilag, Solveig Langsrud, Even Heir
  • Public and Environmental Health Microbiology
    Extended-Spectrum-Beta-Lactamase- and Plasmid-Encoded Cephamycinase-Producing Enterobacteria in the Broiler Hatchery as a Potential Mode of Pseudo-Vertical Transmission
    Michaela Projahn, Katrin Daehre, Uwe Roesler, Anika Friese
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