What Is a Pathogen?
Reviewed: Dr. Gromatzky
6. Types of Pathogen - Parasites
Human parasites include worms and protozoa. Parasites can be broadly categorized into those that are internal (endoparasites) and external (ectoparasites). Endoparasites cause infection inside the body while ectoparasites cause infection superficially. Endoparasites transmit through cysts and eggs that can be found in feces.
The observation of basic cleanliness and hygiene helps reduce the probability of parasitic infections. Some examples of diseases caused by parasites that result in the most fatalities worldwide are malaria, leishmaniasis, cryptosporidiosis, amoebiasis, Chagas disease, African trypanosomiasis, schistosomiasis, ascariasis, cystic echinococcosis, and cysticercosis.
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