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Main article: Human parasite Endoparasites Protozoan organisms Common name of organism or disease Latin name (sorted) Body parts affected Diagnostic specimen Prevalence Source/Transmission (Reservoir/Vector) Granulomatous amoebic encephalitis and Acanthamoeba keratitis (eye infection) Acanthamoeba spp. eye, brain, skin culture worldwide contact lenses cleaned with contaminated tap water ...
Major groups of parasites include protozoans (organisms having only one cell) and parasitic worms (helminths). Of these, protozoans, including cryptosporidium, microsporidia, and isospora, are most common in HIV-infected persons. Each of these parasites can infect the digestive tract, and sometimes two or more can cause infection at the same time.
Many of the worms referred to as helminths are intestinal parasites. An infection by a helminth is known as helminthiasis , helminth infection, or intestinal worm infection. There is a naming convention which applies to all helminths: the ending "-asis" (or in veterinary science: "-osis") is added at the end of the name of the worm to denote ...
Human parasites are divided into endoparasites, which cause infection inside the body, and ectoparasites, which cause infection superficially within the skin. The cysts and eggs of endoparasites may be found in feces, which aids in the detection of the parasite in the human host while also providing the means for the parasitic species to exit ...
Gongylonema pulchrum is the only parasite of the genus Gongylonema capable of infecting humans. Gongylonema pulchrum infections are due to humans acting as accidental hosts for the parasite. There are seven genera of spirudia nematodes that infect human hosts accidentally: Gnathostoma, Thelazia, Gongylonema, Physaloptera, Spirocerca, Rictularia.
A trichrome stain of preserved stool is another method used to detect Giardia. [35] Microscopic examination of the stool can be performed for diagnosis. [1] This method is not preferred, however, due to inconsistent shedding of trophozoites and cysts in infected hosts. [1] Multiple samples over some time, typically one week, must be examined. [1]
They are primarily transmitted by direct human to human contact. But they can be transmitted without touching another human if scabies are on blankets, towels, sheets, and other personal items.
In a heavy infection, female pinworms may adhere to stools that pass out through the anus, and they may thus be detected on the surface on the stool. [14] [19] Adult pinworms are occasionally seen during colonoscopy. [14] On a microscopic level, pinworms have an identifying feature of alae (i.e., protruding ridges) running the length of the ...