Parazitleridir

Parazitleridir is a Turkish phrase formed from parazit (parasite) plus the plural suffix -ler and the copular suffix -dir, used to assert that a subject is a parasite. In biology, a parasite is an organism that lives on or inside a host, obtaining nutrients at the host's expense. Parasites can be microscopic or visible to the naked eye and are found in all major ecosystems.

Parasites are commonly categorized as endoparasites, which inhabit internal organs or body cavities, and ectoparasites, which live on the exterior surface such as skin or fur. Endoparasites include protozoa (such as Plasmodium and Giardia) and helminths (nematodes, cestodes, trematodes). Ectoparasites include fleas, lice, ticks, mites, and some dipteran larvae. Transmission occurs through contaminated food and water, vectors, direct contact, or environmental exposure.

Life cycles often involve one or more hosts; many parasites have complex cycles with an intermediate host and a definitive host. In humans and other hosts, infections can range from asymptomatic to severe, depending on parasite load, virulence, and host factors such as immune status.

Diagnosis relies on laboratory tests such as stool microscopy, blood tests, serology, or imaging. Treatment uses specific antiparasitic medications and may require supportive care. Prevention focuses on hygiene, sanitation, safe drinking water, proper food handling, vector control, and vaccination where applicable. Public health measures aim to reduce transmission and burden from parasitic diseases across populations.