lives on or in a host organism. A host organism can be any animal
Billions of people are affected by parasites
each year. . Parasites
can cause infection
and disease in the host organism. Some parasitic diseases
are easily treated. Others can be life
There are three main classes of parasites that cause disease in humans:
Protozoa and helminthes are often called “endoparasites.” Endo means “inside.” These parasites live inside the body of the host.
Ectoparasites are parasites that live on the surface of the host. “Ecto” means “outside.” Ectoparasites may live on the skin
and feed on the blood
or other animals.
The next three sections talk about the main classes of parasites. Each section also provides examples of common types of parasitic diseases.
Parasites, parasitic diseases, host organism, Protozoa, Helminths, Ectoparasites, endoparasites, Malaria, Giardia infections, Toxoplasmosis, Pinworms, Hookworms, Strongyloidiasis, Scabies, Head or pubic lice, Tick bites, Lyme disease
Last modified: July 15, 2013