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Protozoan infections are responsible for diseases that affect many different types of organisms, including plants, animals, and some marine life. Many of the most prevalent and deadly human diseases are caused by a protozoan infection, including African sleeping sickness , amoebic dysentery , and malaria .
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 ...
Plasmodium malariae is a parasitic protozoan that causes malaria in humans. It is one of several species of Plasmodium parasites that infect other organisms as pathogens, also including Plasmodium falciparum and Plasmodium vivax, responsible for most malarial infection.
Some parasites form gametocytes, which are taken up by a mosquito, continuing the life cycle. Malaria is caused by infection with parasites in the genus Plasmodium. [47] In humans, malaria is caused by six Plasmodium species: P. falciparum, P. malariae, P. ovale curtisi, P. ovale wallikeri, P. vivax and P. knowlesi. [48]
Plasmodium falciparum is a unicellular protozoan parasite of humans, and the deadliest species of Plasmodium that causes malaria in humans. [2] The parasite is transmitted through the bite of a female Anopheles mosquito and causes the disease's most dangerous form, falciparum malaria. P. falciparum is therefore regarded as the deadliest ...
Plasmodium vivax is a protozoal parasite and a human pathogen.This parasite is the most frequent and widely distributed cause of recurring malaria. [2] Although it is less virulent than Plasmodium falciparum, the deadliest of the five human malaria parasites, P. vivax malaria infections can lead to severe disease and death, often due to splenomegaly (a pathologically enlarged spleen).
Giardiasis is caused by the protozoan Giardia duodenalis. [16] The infection occurs in many animals, including beavers, other rodents, cows, and sheep. [16] Animals are believed to play a role in keeping infections present in an environment. [16] G. duodenalis has been sub-classified into eight genetic assemblages (designated A–H). [17]
Common name Diagnosis Treatment Vaccine(s) Acinetobacter baumannii: Acinetobacter infections Culture Supportive care No Actinomyces israelii, Actinomyces gerencseriae and Propionibacterium propionicus: Actinomycosis: Histologic findings Penicillin, doxycycline, and sulfonamides: No Adenoviridae: Adenovirus infection