Giardia lamblia

Microorganism (parasite) found on surfaces and water, that derives from infected human and animal fecal waste, and is responsible for most cases of gastrointestinal disease around the world. If ingested through contaminated tap water, or from pools and hot tubs, it will cause gastrointestinal illness including diarrhea, nausea, vomiting, abdominal pain and also headaches.

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