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my favorite protozoa..Giardia lamblia...morphologically that is..bunch of little smiling faces but dont be fooled by their cuteness..they can cause some serious damage..

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Giardiasis is the most frequently diagnosed intestinal parasitic disease in the United States and among travelers with chronic diarrhea. Signs and symptoms may vary and can last for 1 to 2 weeks or longer. In some cases, people infected with Giardia have no symptoms.

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from ScienceDaily

Giardia Genome Unlocked

""Giardia lamblia" is a flagellated protozoan parasite that colonizes and reproduces in the small intestine, causing giardiasis. Parasite attaches to epithelium by a ventral adhesive disc, and reproduces via binary fission. Giardiasis does not spread via the bloodstream, nor does it spread to other parts of gastrointestinal tract, but remains confined to the lumen of the small intestine. Chief pathways of human infection include ingestion of untreated sewage, common in undeveloped…

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Anything that comes into contact with feces (poop) from infected humans or animals can become contaminated with the Giardia parasite. People become infected when they swallow the parasite. It is not possible to become infected through contact with blood.

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Giardia intestinalis is a protozoan flagellate (Diplomonadida). This protozoan was initially named Cercomonas intestinalis by Lambl in 1859. It was renamed Giardia lamblia by Stiles in 1915 in honor of Professor A. Giard of Paris and Dr. F. Lambl of Prague. However, many consider the name, Giardia intestinalis, to be the correct name for this protozoan. The International Commission on Zoological Nomenclature is reviewing this issue.

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