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Aeromonas caviae septicemia in immunocompetent gastrointestinal carriers

M Dwivedi1, A Mishra, A Prasad

  • 1Department of Microbiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India.

The Brazilian Journal of Infectious Diseases : an Official Publication of the Brazilian Society of Infectious Diseases
|March 17, 2009
PubMed

Insights

Aeromonas caviae septicemia was observed in immunocompetent patients in India. This suggests potential asymptomatic gastrointestinal carriage, warranting further investigation in regions with high Aeromonas infections.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Gastroenterology

Background:

  • Community-acquired septicemia can occur in immunocompetent individuals.
  • Aeromonas species are known causes of gastroenteritis, particularly in certain regions.
  • Understanding non-diarrheal presentations of Aeromonas infections is crucial.

Observation:

  • Three immunocompetent patients in Northern India presented with community-acquired septicemia.
  • Blood and stool cultures isolated Aeromonas caviae strains.
  • No recent history of diarrhea was reported in these patients.
  • In vitro studies demonstrated significant invasiveness of the isolated Aeromonas caviae strains in Hep-2 cells.

Findings:

  • Aeromonas caviae can cause septicemia in immunocompetent individuals without preceding diarrhea.
  • The isolated strains exhibit considerable invasiveness, suggesting a potential mechanism for systemic infection.
  • Asymptomatic gastrointestinal carriage of invasive Aeromonas caviae strains is a plausible scenario.

Implications:

  • This finding highlights the potential for widespread asymptomatic gastrointestinal carriage of Aeromonas caviae in India.
  • Further research is needed to assess the prevalence of asymptomatic carriage in India and other regions with high rates of Aeromonas-induced gastroenteritis.
  • Clinical awareness should be raised regarding Aeromonas caviae as a potential cause of septicemia, even in the absence of diarrheal symptoms.

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