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Fatal pneumonia due to Serratia proteamaculans subsp. quinovora

C Bollet1, P Grimont, M Gainnier

  • 1Laboratoire de Microbiologie et d'Hygiène Hospitalière, Hôpital Salvator, Marseille, France.

Insights

A rare bacterium, Serratia proteamaculans subsp. quinovora, was identified in a patient with pneumonia. This marks the first documented human infection by this specific subspecies, highlighting a novel pathogen in clinical settings.

Area of Science:

  • Medical microbiology
  • Infectious diseases
  • Clinical diagnostics

Background:

  • Serratia species are opportunistic Gram-negative bacteria.
  • Subspecies identification is crucial for understanding pathogenicity.
  • Pneumonia can be caused by a diverse range of microorganisms.

Observation:

  • Serratia proteamaculans subsp. quinovora was isolated from multiple clinical samples.
  • Samples included blood cultures, tracheal aspirates, and pleural effusion.
  • The patient presented with symptoms of pneumonia.

Findings:

  • This study reports the first clinical isolation of Serratia proteamaculans subsp. quinovora.
  • This represents the first documented human infection attributed to this subspecies.
  • The organism was implicated in a case of pneumonia.

Implications:

  • Expands the known spectrum of human pathogens.
  • Highlights the need for accurate identification of Serratia subspecies in clinical microbiology.
  • May necessitate updates in diagnostic and treatment protocols for infections caused by novel bacterial strains.

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