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(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.
References in periodicals archive ?
Molecular Detection of Giardia lamblia and Cryptosporidium parvum in Different Water Sources of District Bannu, Khyber Pakhtunkhwa, Province of Pakistan.
In vitro effects of berberine sulphate on the growth and structure of Entamoeba histolytica, Giardia lamblia and Trichomonas vaginalis.
In vitro effects of berberine sulfate on the growth and structure of Entamoeba histolytica, Giardia lamblia, and Trichomonas vaginalis.
lamblia as their worm-free counterparts, the researchers report in the Oct.
also includes Cryptococcus the neoformans, intracellular Histoplasma bacteria capsulatum Salmonella typhi, Listeria monocytogenes and non-tuberculous mycobacteria Immune Protozoa defect Complement - deficiency Phagocytic - defects Antibody Giardia lamblia deficiency T cell Pneumocystis defects jirovecii, Toxoplasma gondii, Cryptosporidium parvum Modified from referance 10.
Giardia lamblia is a flagellate that usually infects otherwise healthy individuals and often occurs in children.
People exposed to the protozoan Giardia lamblia are at increased risk of having irritable bowel syndrome and chronic fatigue years after their gastrointestinal infections have been treated, a team of Norwegian researchers has found.
They are also vectors of amebic dysentery caused by Entamoeba histolytica, Giardia lamblia, and eggs of a variety of tapeworms, for example.
Known in the United States primarily as the bane of hikers, the single-celled intestinal parasite Giardia lamblia is a major cause of diarrheal illness worldwide, resulting in approximately 100 million infections a year.
Fifteen of these patients had metazoa in stool (Trichoris trichura 2, Ancylostoma duodenale 3 and Ascaria lumbricoidis 10) and the remaining 11 had protozoa (Giardia lamblia 7 and Entamoeba hystolytica cyst 4).
Giardia lamblia, Entamoeba histolytica, Cryptosporidium, Cyclospora, Toxoplasma ve Trichinella spiralis parazit kaynakli enfeksiyonlardan sorumludur.