Giardia

  • Giardia is an intestinal infection caused by a the single-celled parasite Giardia intestinalis, also known as Giardia lamblia. The parasite lives in its host's intestine and is spread through fecal contamination of food and water.eMedicine: Giardiasis
  • Symptoms

    Symptoms usually develop a week or two after infection. Common symptoms include fatigue, abdominal cramping, bloating, diarrhea and weight loss. Infected individuals usually recover within two to six weeks although some cases can last for years.MayoClinic.com: Giardia Infection
  • Life Cycle

    The parasite is reproduces through cell division inside its host's intestinal tract. During its life cycle the parasite will drop from its hold on the intestinal wall and form a cyst. The cyst is passed in fecal matter and can survive three months in cold water. The cyst can't survive freezing temperatures. If the cyst is ingested, the new host's stomach acid will signal it to come out of hibernation and it will begin to reproduce starting the cycle again.Yosemite Association: Giardiasis
  • Disclaimer

    The content in this page is not a substitute for professional medical advice. If you think you have giardia, please consult your doctor.

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