Giardia Surveillance

Giardiasis (GEE-are-DYE-us-sis) is caused by a microscopic parasite Giardia intestinalis (also known as Giardia lamblia or Giardia duodenalis). The parasite is found on surfaces or in soil, food, or water that has been contaminated with the feces from infected humans or animals. People can become infected after accidentally swallowing the parasite. Giardia causes diarrheal illness, and giardiasis is a common cause of waterborne disease in humans in the United States . There are several prescription medicines available to treat Giardia infection.

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