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What are the stages of hookworms?

【Expert answer】

Created: 2022-06-14 14:15:12

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Hookworms are large, multicellular organisms which infect their host as an immature larva by penetrating the skin. They then migrate via the bloodstream to the lungs, break through the alveoli and migrate up the trachea to be swallowed, finally residing in the small intestine as adult worms.


What is the diagnostic stage of hookworm?

Laboratory Diagnosis Microscopic identification of eggs in the stool is the most common method for diagnosing hookworm infection. The recommended procedure is as follows: Collect a stool specimen.

What is the life cycle of a hookworm in humans?

Life Cycle Most adult worms are eliminated in 1 to 2 years, but the longevity may reach several years. Some A. duodenale larvae, following penetration of the host skin, can become dormant (hypobiosis in the intestine or muscle). These larvae are capable of re-activating and establishing patent, intestinal infections.

What is the feeding stage of hookworm?

Hookworm eggs gain nutrition via the host feces. After penetrating the skin, juveniles attach to blood vessels and begin to feed. The larval stage is free-living where there is independent existence in the soil. They then penetrate the host's skin by the secretion of digestive enzymes that dissolve the skin.

How long does it take for hookworms to become adults?

It takes 2-3 weeks for hookworm larvae to mature and begin producing eggs. For this reason, fecal examination may be less reliable in very young puppies than in adult dogs. Adult hookworms are small in size and firmly attach to the intestinal wall, which is why they are rarely detected in stool.

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