Giardiasis
An intestinal infection caused by a parasite that spreads through contaminated water, food, or hands.
Common symptoms
- Watery diarrhea
- Greasy stools
- Stomach cramps
- Gas
- Nausea
- Weight loss
Cause
Giardia lamblia parasite, common in daycare outbreaks and untreated water.
How common is it?
Most common intestinal parasite in the U.S.; frequent in daycare and camp settings.
Treatment
Prescription antiparasitics (metronidazole, tinidazole, or nitazoxanide) and rehydration.
Prevention
Thorough handwashing after diapering and toilet use, safe drinking water when camping, avoiding swallowing pool or lake water.
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Frequently asked questions
Related illness guides
Medical disclaimer: Educational only. Always consult a healthcare provider for diagnosis and treatment.