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Human Parasites

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What are the types of organisms that can cause parasitic diseases in the human being? Explain at least four such organisms.

What are the different routes that pathogenic protozoans can use to enter the host cells?

What are three methods for establishing a laboratory diagnosis of an intestinal parasitic infection? Explain

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Solution Summary

Roundworms are a group of invertebrates that have long, round bodies. They are different in sizes, and they can be seen with the naked eye. Parasitic roundworms can live in humans where they can cause many different problems. Most parasitic roundworms have eggs or larvae found in the soil.

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Types of organisms that can cause parasitic diseases in human are parasitic roundworms.

Roundworms are a group of invertebrates that have long, round bodies. They are different in sizes, and they can be seen with the naked eye. Parasitic roundworms can live in humans where they can cause many different problems. Most parasitic roundworms have eggs or larvae found in the soil. The person that get infected usually pick them up by hands and accidentally transfer to their mouth. Eggs and larvae can also enter the human body through the skin. Another type of organism that can cause parasitic disease is the group called the protozoa. The protozoa are single-celled organism that can only be seen with a microscope. They can invade a human cell and multiply easily in each of the human cells. Protozoa can be transmitted from one human to another via the fecal-oral route like sharing food with infected person and through direct person to person contact.

Types of organism causing parasitic diseases
The roundworm enter the human body as a larvae and usually mature as adult in the human intestines. They then can cause infection and diseases.
One of these organisms that cause parasitic diseases is the hookworm ( Necator americanus). This is the most common type of hookworm that causes hookworm disease.
Hookworm diseases are cause by hookworm eggs that are passed in human feces onto the ground where they are develop into infective larvae (immature worms). The disease is cause by the transmission of the hookworm when you walk bare foot over contaminated soil. The hookworm larvae get into your skin in the foot area and ...

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