Introduction to Giardia duodenalis: The Parasite and the Disease

  • Lucy J. Robertson
Chapter
Part of the SpringerBriefs in Food, Health, and Nutrition book series (BRIEFSFOOD)

Abstract

Giardia duodenalis is the most common intestinal protozoan parasite of humans globally. A range of other mammals can also be hosts to this parasite, although the zoonotic potential is currently unresolved and parasites that are infectious to humans are not necessarily infective to other mammals and vice versa. The life cycle of G. duodenalis is simple, and contains two morphologically distinct forms: the vegetative trophozoites that inhabit the host intestine and replicate largely asexually by binary fission, sometimes resulting in the mucosal surface of the intestine being covered, and the transmission stage, the environmentally robust cysts that are excreted in the faeces of the infective host. This chapter provides an overview of the parasite, establishment of infection and details of the life cycle, and also describes the disease, giardiasis, that is associated with infection, with focus on symptoms, diagnosis and treatment.

Keywords

Fatigue Income Polysaccharide Folate Fibril 

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Copyright information

© Lucy J. Robertson 2013

Authors and Affiliations

  • Lucy J. Robertson
    • 1
  1. 1.Institute for Food Safety & Infection BiologyNorwegian School of Veterinary ScienceOsloNorway

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