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A case of osteitis due to Staphylococcus aureus and Arcanobacterium bernardiae coinfection

Pascale Bemer1, Marion Eveillard, Sophie Touchais

  • 1Department of Bacteriology, Nantes University Hospital, France. pascale.bemer@chu-nantes.fr

Diagnostic Microbiology and Infectious Disease
|December 23, 2008
PubMed

Insights

Arcanobacterium bernardiae human infections are rare, with only two prior reports. This case highlights the bacterium

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Osteoarticular Infections

Background:

  • Arcanobacterium bernardiae is a rarely reported cause of human infection.
  • Osteoarticular infections require accurate and timely diagnosis for effective treatment.

Observation:

  • A polymicrobial knee infection occurred in an immunocompetent patient with chronic osteitis.
  • Initial diagnosis was complicated by the co-isolation of Staphylococcus aureus.

Findings:

  • Arcanobacterium bernardiae was identified as a causative agent in this knee infection.
  • Extended incubation and subculturing of enriched media were crucial for isolating A. bernardiae.

Implications:

  • This case expands the known spectrum of A. bernardiae-related infections.
  • Diagnostic laboratories should consider prolonged incubation for suspected A. bernardiae cases.
  • A. bernardiae should be considered in the differential diagnosis of polymicrobial osteoarticular infections.

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