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Giardiasis. Issues in diagnosis and management

D R Hill1

  • 1Division of Infectious Diseases, University of Connecticut School of Medicine, Farmington.

Infectious Disease Clinics of North America
|September 1, 1993
PubMed
Summary

Giardia lamblia causes frequent diarrhea globally. Advances reveal diverse strains, mammalian hosts, and the role of secretory IgA in protection, with new diagnostic tools and metronidazole as a primary treatment.

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Area of Science:

  • Infectious Diseases
  • Microbiology
  • Immunology

Background:

  • Giardia lamblia is a prevalent cause of diarrhea worldwide.
  • Research indicates the existence of diverse Giardia strains and mammalian host susceptibility.
  • Secretory IgA plays a crucial role in host defense against Giardia infections.

Purpose of the Study:

  • To review current understanding of Giardia lamblia biology and transmission.
  • To discuss advancements in diagnosis and treatment of giardiasis.
  • To highlight changes in transmission patterns and therapeutic recommendations.

Main Methods:

  • Literature review of recent advances in Giardia lamblia research.
  • Analysis of epidemiological trends in Giardia transmission.
  • Evaluation of current diagnostic methods and treatment guidelines.

Main Results:

  • Giardia transmission increasingly involves person-to-person and foodborne routes, alongside traditional waterborne transmission.
  • New antigen detection assays offer improved stool-based diagnosis, reducing the need for duodenal sampling.
  • Metronidazole is the preferred treatment for giardiasis due to efficacy and tolerability.

Conclusions:

  • Giardiasis remains a significant public health concern with evolving transmission dynamics.
  • Diagnostic capabilities for Giardia infections have significantly improved.
  • Metronidazole is the drug of choice, with paromomycin as an alternative for pregnant women.

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