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THE HUMAN BEING AND THE ORGANISMS THAT AFFECT HIS HEALTH, An ectoparasite…
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An ectoparasite is an organism that lives on the outside of another organism and benefits from the relationship at its expense. examples: fleas are a little external parasites that feed on a blood of mammals and birdsFORMS OF CONTAGION
Animals or people can become infested if they approach another parasitized individual or places where eggs have been laid. They are distributed over the entire body surface, preferring warmer areas and points of friction or pressure with clothing.CONCEQUENCES
They are important because they can cause skin problems, induce an altered immune response from the body or allergic reactions.TREATMENT
We can use Organophosphate pesticides are a type of drug used to treat ectoparasites, such as flies, ticks, mites and lice. but it is better to consult a veterinarian 
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Live in the interior of the body of their host, especially endoparasites, do not have the capacity to host directly. This is why they need to use mechanisms to parasitize the host.
Example:
The amoeba is an intestinal parasite that lives in humans and dogs. These parasites basically feed on bacteria and nutrient debris from their host's stomach. Amoeba infection is caused by the ingestion of contaminated food and water and its treatment is through an amoebicide, either metronidazole or tinidazole, which destroys the amoebae.