The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(Lamblia intestinalis, Giardia lamblid), a parasitic protozoan of the class Mastigophora, first described in 1859 by V. D. Lambl.

Lamblia is pear-shaped and is 10-20 microns long. The dorsal side is convex; the ventral side is concave, forming a sucker for temporary attachment to the epithelial cells of the host’s intestine. There are two oval nuclei and four pairs of flagella. Lamblia inhabits the intestine of man (primarily children) and is found chiefly in the duodenum. Less often, it lives in the bile duct and gall bladder. Lambliasis, or infection with Lamblia, is often an asymptomatic condition. Infection occurs by means of cysts formed when Lamblia enters the lower sections of the intestine. Other species of Lamblia (more than ten) parasitize the intestines of a variety of other mammals (mice and rabbits). One species is a parasite of amphibians.


Tumka, A. F. Parazitologiia, epidemiologiia i laboratornaia diagnostika kishechnykh protozoinykh infektsii. Leningrad, 1967.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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Among the protozoan parasites, Giardia lamblia, Entamoeba histolytica, and a number of helminthes such as hook worms (Necator americanus and Ancylostoma duodenale), Ascaris lumbricoides, and Enterobius vermicularis could contaminate food and water sources (3,4).
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lamblia (short for Giardia lamblia) is a parasite that infects the small intestine.
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Entamoeba coli (42%), Endolimax nana (23%), Giardia lamblia (16%), and Entamoeba hartmanni (10%) were the main protozoa detected.
Alem disso, acredita- se tambem que 200 e 500 milhoes de individuos, respectivamente, alberguem Giardia lamblia e Entamoeba histolytica (BAPTISTA et al., 2006; FONSECA; PENUELA; BOTERO, 2009; LODO et al., 2010; WHO, 2005).
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