Giardiasis

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Digestive system organs

Giardiasis

Institutional hygiene

Giardia; Traveler's diarrhea - giardiasis

Some infections go away on their own. Anti-infective medicines may be used.

Cure rates are generally greater than 80%. Drug resistance may be a factor in treatment failures, sometimes requiring a change in antibiotic therapy.

In pregnant women, treatment should wait until after delivery, because some drugs used to treat the infection can be harmful to the unborn baby.

It is common for the infection to go away on its own. However, persistent infections have been reported and need further antibiotic treatment. Some people who have had Giardia infections for a long time continue having symptoms even after the infection has gone.

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• Dehydration
• Malabsorption (inadequate absorption of nutrients from the intestinal tract)
• Weight loss

Call your health care provider if:

• Diarrhea or other symptoms last for more than 14 days
• You have blood in the stool
• You are dehydrated

Review Date: 05/25/2010
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).