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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.
This can result in damage to the fetus's brain, eyes, and other organs. Treatment is available for pregnant women and the immunosuppressed. [30] Cryptosporidiosis can be contracted through contact with water, food, soil, or surfaces contaminated with feces containing the Cryptosporidium. Immunocompromised people are the most susceptible.
Antiprotozoal agents (ATC code: ATC P01) is a class of pharmaceuticals used in treatment of protozoan infection. A paraphyletic group , protozoans have little in common with each other. For example, Entamoeba histolytica , a unikont eukaryotic organism, is more closely related to Homo sapiens (humans), which also belongs to the unikont ...
Overuse or misuse of antiparasitics can lead to the development of antimicrobial resistance. Broad-spectrum antiparasitics, analogous to broad-spectrum antibiotics for bacteria, are antiparasitic drugs with efficacy in treating a wide range of parasitic infections caused by parasites from different classes.
The taxon 'Protozoa' fails to meet these standards, so grouping protozoa with animals, and treating them as closely related, became no longer justifiable. The term continues to be used in a loose way to describe single-celled protists (that is, eukaryotes that are not animals, plants , or fungi ) that feed by heterotrophy . [ 9 ]
Parasites are organisms which derive sustenance from its host while causing it harm. [2] The study of parasites and parasitic diseases is known as parasitology. [3] Medical parasitology is concerned with three major groups of parasites: parasitic protozoa, helminths, and parasitic arthropods. [2]
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When examining feces, the unsporulated oocysts can easily be mistaken for fungal spores, and thus can be easily overlooked. [3] In 2007, Indian researchers published a case report that found an association between Cyclospora infection and Bell's palsy. This was the first reported case of Bell's palsy following chronic Cyclospora infection. [4]