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Giardiasis: an elusive cause of gastrointestinal distress
1Emergency Department, Kaiser Permanente Medical Center, Hayward, CA, 94545, USA. hdbacker@aol.com.
Abstract:
The common protozoan Giardia lamblia has a fecal-oral mode of transmission, usually from contaminated water or food or person-to-person contact. Infection may be asymptomatic or result in a broad spectrum of symptoms-most commonly, subacute illness that is mistaken for other gastrointestinal problems. Although most infections are self-limited, treatment is indicated due to the long duration and the risk of transmission. Several therapeutic agents are available, but none is 100% effective. Prevention for people involved in outdoor sports or recreation and for international travelers includes treatment of all surface water and rigorous personal hygiene.
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