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Corynebacterium striatum: an emerging respiratory pathogen.

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Corynebacterium striatum, a multi-drug resistant pathogen, can cause respiratory infections like COPD exacerbations and pneumonia. Further identification is crucial as these bacteria are often resistant to multiple antibiotics.

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Area of Science:

  • Clinical Microbiology
  • Infectious Diseases
  • Antimicrobial Resistance

Background:

  • Corynebacterium spp. are often overlooked as normal flora.
  • Corynebacterium striatum is an emerging multi-drug resistant pathogen.
  • This organism infrequently causes respiratory tract infections.

Purpose of the Study:

  • To investigate the clinical and microbiological characteristics of respiratory infections caused by Corynebacterium striatum.
  • To assess the antimicrobial susceptibility and molecular typing of C. striatum isolates.

Main Methods:

  • Retrospective review of clinical data from hospitalized patients.
  • Antimicrobial susceptibility testing of C. striatum isolates.
  • Random Amplification of Polymorphic DNA (RAPD) typing for outbreak investigation.

Main Results:

  • 15 C. striatum isolates from 11 patients were analyzed.
  • Infections primarily involved exacerbation of chronic obstructive pulmonary disease (COPD) and pneumonia.
  • All isolates exhibited multi-drug resistance.
  • RAPD typing indicated no patient-to-patient transmission.

Conclusions:

  • Corynebacterium spp. should be recognized as potential pathogens.
  • Species-level identification of suspicious isolates is essential.
  • Corynebacterium striatum frequently displays multi-drug resistance, necessitating careful clinical consideration.