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Septicemia with Streptococcus pseudopneumoniae: report of three cases with an apparent hepatic or bile duct

Kurt Fuursted1, Pia Jeanette Littauer2, Thomas Greve3

  • 1a Department of Microbiology & Infection Control , Statens Serum Institut , Copenhagen , Denmark ;

Infectious Diseases (London, England)
|April 22, 2016
PubMed

Insights

Streptococcus pseudopneumoniae, a bacterium linked to respiratory infections, can cause invasive bloodstream infections. This study identified it in three patients with hematological diseases, originating from the liver or bile duct.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Genomics

Background:

  • Streptococcus pseudopneumoniae, identified in 2004, is recognized as a human pathogen.
  • It is typically associated with respiratory tract infections.

Observation:

  • This report details three cases of invasive infection caused by S. pseudopneumoniae.
  • Atypical Streptococcus pneumoniae isolates were recovered from blood cultures of patients with hematological conditions.
  • Infection origin was linked to the liver or bile duct in these patients.

Findings:

  • Genome sequencing and multi-locus sequence analysis (MLSA) confirmed the isolates as S. pseudopneumoniae.
  • Multi-locus sequence typing (MLST) identified novel sequence types.
  • The isolates exhibited no antibiotic resistance.

Implications:

  • This study highlights the potential of S. pseudopneumoniae to cause invasive infections beyond the respiratory tract.
  • The findings are significant for understanding the pathogenicity of S. pseudopneumoniae in immunocompromised individuals.
  • Further research into S. pseudopneumoniae pathogenesis and clinical management is warranted.
Keywords:
Streptococcus pseudopneumoniaehepatic and bile duct associationsepticaemiawhole-genome sequencing

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