Giardiasis
Giardiasis is an intestinal infection caused by the parasite Giardia. You are most likely to be exposed to Giardia from contaminated water during a camping trip, international travel, or from drinking well-water. You may also become infected by eating contaminated undercooked food. Exposure to the stool of someone who`s infected can also cause infection. A distinctive and classic symptom of Giardia is eruptions (or burps) that smell like sulfur.
When to call your doctor
Call your health care provider if you have:
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Diarrhea, which often comes and goes.
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Stomach bloating or fullness.
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Upset stomach (nausea) or vomiting.
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Unplanned weight loss.
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Blood in your stool.
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Dehydration.
When to call 911
Call 911 if you have:
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Uncontrolled vomiting.
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Severe belly pain.
How is giardiasis treated?
You will be examined and will likely have a stool sample checked in a lab. This stool is checked for the parasite that causes the disease. If giardiasis is suspected or confirmed, you will be prescribed an antibiotic that you take for 5 to 7 days. In many cases, this clears the infection.
Preventing giardiasis
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| Lávese las manos con frecuencia para ayudar a prevenir la infección por giardia. |
Take these steps to help prevent infection with Giardia:
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Wash your hands with clean, running water (warm or cold) after using the bathroom and before eating. Wash for at least 20 seconds. Alcohol-based hand sanitizers may not work against Giardia.
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Wash your hands each time you change a child's diaper.
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Don't drink from rivers and streams.
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Use a water treatment kit when camping.
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Wash or peel raw fruits and vegetables before using.
Online Medical Reviewer:
Barry Zingman MD
Online Medical Reviewer:
Marianne Fraser MSN RN
Online Medical Reviewer:
Sabrina Felson MD
Date Last Reviewed:
1/1/2025
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