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Balantidiosis is a zoonotic disease and is acquired by humans via the fecal-oral route from the normal host, the pig, where it is asymptomatic. Water is the vehicle for most cases of balantidiosis. Human-to-human transmission may also occur. Balantidium 's habitats in humans are the cecum and colon.
30.2.4.2 Balantidium coli. Balantidium coli is the only species in the genus Balantidium. The trophozoite stage in the large intestine can cause ulcerative colitis and diarrhea. The cyst is the infective stage. B. coli is a commensal widely distributed in pigs. Water obtained from drainage areas contaminated by human or pig feces is the major ...
Aug 25, 2023 · Balantidiasis (also known as balantidiosis) is defined as large-intestinal infection with Balantidium coli, which is a ciliated protozoan (and the largest protozoan that infects humans). B coli is known to parasitize the colon, and pigs may be its primary reservoir. Trophozoite of Balantidium coli in colon.
Oct 9, 2021 · B. coli is known to be transmitted to humans by domesticated pigs , where transmission occurs by ingestion of cysts through direct or indirect contact and through other means such as contaminated food and water by human and pig faeces . After encystment in the intestines, the motile trophozoites attack the intestinal epithelium, creating ulcers.
Balantidium coli has 2 developmental stages: a trophozoite stage and a cyst stage. [web.stanford.edu] Recent molecular analyses have suggested the need for taxonomic revision, and it is now sometimes referred to as Neobalantidium coli or Balantioides coli, although this nomenclature has neither been resolved nor widely adopted in the medical ...
Aug 25, 2023 · The cyst represents the nonreplicating infective stage. B coli forms a large spherical cyst that may grow to 60 µm in diameter. The cyst contains a macronucleus, a micronucleus, and a granular cytoplasm. Cilia may be found in young cysts but never in mature cysts. The cysts can be demonstrated in semiformed and fully formed stools.
Aug 20, 2010 · Description and significance. From the genus Balantidium, Balantidium coli is a large ciliated protozoan parasite. Balantidium coli has been known about for over a century, but the process of infection has yet to be discovered. It is the only known ciliated parasite to infect humans. It is responsible for the disease Balantidiasis.
