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The clinical relevance of nosocomially acquired infections caused by multi-resistant Achromobacter strains is rapidly increasing. Here, a diverse set of 61 Achromobacter xylosoxidans strains was characterized by MultiLocus Sequence Typing and Phenotype MicroArray technology. The strains were further analyzed in regard to their susceptibility to 35 antibiotics and to 34 different and newly isolated bacteriophages from the environment.

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Limited beta-lactams show antipseudomonal activity. The rapid spread of IMP-type metallo-beta-lactamases (MBLs), which have a broad spectrum of substrates and a poor susceptibility to clinically available inhibitors, further restricts beta-lactam use. In the present study, we evaluated the potency of IMP-10 MBL in hydrolysing antipseudomonal beta-lactams currently available in the clinic.

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Antibiotic susceptibility of preoperative normal conjunctival bacteria.

Am J Ophthalmol

April 2005

Department of Ophthalmology, School of Medicine, Stanford University, Stanford, California 94305, USA.

Purpose: To determine the antibiotic susceptibility of preoperative conjunctival bacterial flora.

Design: In vitro study.

Methods: Antibiotic susceptibility of conjunctival bacterial strains isolated from 164 patients undergoing intraocular surgery was determined using the Kirby-Bauer disk-diffusion technique.

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Serotypes and anti-microbial susceptibility of Plesiomonas shigelloides isolates from humans, animals and aquatic environments in different countries.

Comp Immunol Microbiol Infect Dis

March 2004

Department of Veterinary Microbiology, Section of Bacteriology, SLU, Box 7036, S-750 07, Uppsala, Sweden.

Article Synopsis
  • A study examined 73 strains of Plesiomonas shigelloides from humans, animals, and aquatic environments for their serotypes and antibiotic resistance.
  • A high percentage of strains were typeable (86.3% by O and 94.5% by H serotyping), with 57 different serotypes identified, notably O11:H2 and O23:H1a1b found in Finland, Cuba, and Europe.
  • Most strains showed high susceptibility to tested antimicrobials, but 92-96% were resistant to broad-spectrum penicillins, with no link found between resistance patterns and serotypes.
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Production of a metallo-beta-lactamase activity was detected in a carbapenem-resistant Pseudomonas aeruginosa clinical isolate (isolate VR-143/97) from an Italian inpatient at the Verona University Hospital (northern Italy). The metallo-beta-lactamase determinant was isolated from a genomic library of VR-143/97, constructed in an Escherichia coli plasmid vector, by screening for clones with reduced susceptibility to imipenem. Sequencing of the cloned gene revealed that it encoded a new class B beta-lactamase that was named VIM-1.

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