Editing Human pathogen (section)

===Other parasites===
{{main|Human parasites}}
Protozoans are single-celled eukaryotes that feed on microorganisms and organic tissues. Considered as "one-celled animal" as they have animal like behaviors such as motility, predation, and a lack of a cell wall. Many protozoan pathogens are considered human parasites as they cause a variety of diseases such as: [[malaria]], [[amoebiasis]], [[babesiosis]],
[[giardiasis]], [[toxoplasmosis]], [[cryptosporidiosis]], [[trichomoniasis]], [[Chagas disease]], [[leishmaniasis]], [[African trypanosomiasis]] (sleeping sickness), [[Acanthamoeba keratitis|''Acanthamoeba'' keratitis]], and [[primary amoebic meningoencephalitis]] (naegleriasis).
[[File:Threadworm.jpg|thumb|250x250px|Two pinworms next to a ruler, measuring in 6 millimeters in length]]
Parasitic worms (Helminths) are macroparasites that can be seen by the naked eye. Worms live and feed in their living host, receiving nourishment and shelter while affecting the host's way of digesting nutrients. They also manipulate the host's immune system by secreting immunomodulatory products<ref>{{cite book | veditors = Jirillo E, Magrone T, Miragliotta G |title=Immune Response to Parasitic Infections |year=2014 | publisher = Bentham Science Publishers | volume = 2 |isbn=978-1-60805-989-8 |doi=10.2174/97816080598501140201|s2cid=78737083 }}</ref> which allows them to live in their host for years. Many parasitic worms are more commonly intestinal that are soil-transmitted and infect the digestive tract; other parasitic worms are found in the host's blood vessels. Parasitic worms living in the host can cause weakness and even lead to many diseases. Parasitic worms can cause many diseases to both humans and animals. [[Helminthiasis]] (worm infection), [[Ascariasis]], and [[Pinworm infection|enterobiasis]] (pinworm infection) are few that are caused by various parasitic worms.{{citation needed|date=July 2021}}