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Haemophilus parainfluenzae: an underdiagnosed pathogen of biliary tract infections?

J Frankard1, H Rodriguez-Villalobos, M J Struelens

  • 1Department of Infectious Diseases, Erasme Hospital-ULB, Route de Lennik 808, 1070 Brussels, Belgium. jfrankar@ulb.ac.be

European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology
|December 12, 2003
PubMed

Insights

Haemophilus parainfluenzae, an uncommon gastrointestinal pathogen, caused monobacterial peritonitis complicating cholecystitis. Improved diagnostics may reveal its role in biliary tract infections.

Area of Science:

  • Gastroenterology
  • Infectious Diseases
  • Microbiology

Background:

  • Haemophilus parainfluenzae is increasingly recognized as a pathogen in digestive infections.
  • Its role in biliary tract infections, though sporadic, is gaining attention.
  • The organism is known to colonize the gastrointestinal tract.

Observation:

  • A case of monobacterial peritonitis complicating cholecystitis is presented.
  • The causative agent was identified as Haemophilus parainfluenzae.
  • This highlights an uncommon presentation of a known colonizer.

Findings:

  • Haemophilus parainfluenzae can be a pathogenic agent in biliary tract infections.
  • An ascending route of infection from the gastrointestinal tract to the biliary system is hypothesized.
  • Specific culture media may improve the identification of this bacterium.

Implications:

  • Increased awareness of Haemophilus parainfluenzae's pathogenic potential in biliary disease is warranted.
  • Diagnostic strategies for biliary tract infections may need refinement.
  • Further research into the pathogenesis of Haemophilus parainfluenzae in the biliary tract is suggested.

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