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Shewanella algae in acute gastroenteritis.

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Shewanella algae, a rare bacterial pathogen, caused acute gastroenteritis in a patient with bloody diarrhea. This case highlights the need to identify uncommon causes of illness, especially when common pathogens are absent.

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Area of Science:

  • Microbiology
  • Clinical Medicine
  • Bacterial Pathogenesis

Background:

  • Shewanella algae is an emerging bacterial species.
  • Cases are typically linked to marine environments.
  • Its role as a human pathogen is infrequently documented.

Observation:

  • A patient presented with acute gastroenteritis and bloody diarrhea.
  • Shewanella algae was isolated as the sole causative agent.
  • Identification was confirmed through automated systems and 16S rRNA gene sequencing.

Findings:

  • Shewanella algae can cause severe gastrointestinal illness in humans.
  • The bacterium was identified as the etiological agent in this case.
  • Automated identification systems and genetic analysis confirmed the species.

Implications:

  • Clinicians should consider rare pathogens like Shewanella algae in unexplained gastroenteritis.
  • Diagnostic laboratories should be prepared to identify emerging bacterial pathogens.
  • This case expands the known spectrum of Shewanella algae-associated human infections.