Course # DL-007 - Giardiasis

by Helen Sowers, M.A. CLS, Dept. of Biological Science (Retired), California State University East Bay

Approved for 1.0 CE
Level of Difficulty: Intermediate


Giardia intestinalis (also known as G. lamblia and G. duodenalis) is the most common intestinal parasite of humans identified in the United States. During 2009-2010 the number of reported cases of giardiasis in the U.S. increased slightly from 19,403 to 19,888. In California the number of cases decreased from 1,798 in 2009 to 1,783 in 2010, continuing a steady decrease over a 10-year period.


At the end of this course the participant will be able to

  1. Discuss the causative agent of giardiasis
  2. Explain the mode of transmission of  Giardia intestinalis infection
  3. List the symptoms of giardiasis
  4. Discuss the tests for Giardia infection
  5. List methods of prevention of transmission of Giardia
  6. Discuss problems in explaining epidemiology of giardiasis


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