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microbiologyparasitic InfectionsParasitology

Human Parasites, Types of Parasites, and Classification


Parasite is a living organism which gets nutrition and protection from another organism where it lives. Parasites enter into the human body through mouth, skin and genitalia. In this article we will generally discuss the types and classification of parasites. It is important from academic point of view.

Those parasites are harmful, which derives their nutrition and other benefits from host and host gets nothing in return but suffers from some injury.

Types of Parasites

  1. Ecto-parasite: An ecto-parasite lives outside on the surface of the body of host.
  2. Endo-parasite: An endo-parasite lives inside the body of host, it lives in the blood, tissues, body cavities, digestive tract or other organs.
  3. Temporary parasite: A temporary parasite visits its host for a short period of time.
  4. Permanent parasite: Permanent parasite lives its whole life in the host.
  5. Facultative parasite: A facultative parasite can live both independently and dependently. It lives in the host when opportunity arises.
  6. Obligatory parasite: An obligatory parasite, can’t live without host.
  7. Accidental parasite: An accidental parasite, accidently enters in an unusual host and can live their normally. It may or may not cause disease in the accidental host.
  8. Aberrant parasite: An aberrant parasite, accidently or deliberately reaches a host where it can’t live and will die sooner or later.

Classification of Parasites


  1. Protozoa

    1. Sarcodina (amebas)
    2. Sporozoa
    3. Mastigophora (flagellates)
    4. Ciliata
  2. Metazoa

    1. Nemathelminthes

    2. Platyhelminthes

      1. Termatoda (flukes)
      2. Cestoda (tapeworms)

parasites types of parasites, classification of parasites

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