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Questions and Answers
How do humans typically get infected with Ascaris lumbricoides?
How do humans typically get infected with Ascaris lumbricoides?
What is the approximate maximum length adult worms of Ascaris lumbricoides can grow?
What is the approximate maximum length adult worms of Ascaris lumbricoides can grow?
In which organ do the larvae of Ascaris lumbricoides mature into adult worms?
In which organ do the larvae of Ascaris lumbricoides mature into adult worms?
What happens when Camallanus species larvae are ingested by copepods?
What happens when Camallanus species larvae are ingested by copepods?
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What are the symptoms of Ascaris lumbricoides infection in humans?
What are the symptoms of Ascaris lumbricoides infection in humans?
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How do fish become infected with Camallanus species?
How do fish become infected with Camallanus species?
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Study Notes
- Ascariasis is a human disease caused by the roundworm Ascaris lumbricoides, affecting approximately one-quarter of the world's population, particularly in areas with poor hygiene.
- Infection occurs through the ingestion of food containing Ascaris eggs, which hatch in the intestine, migrate to the lungs, and return to the intestine to mature.
- Adult Ascaris worms can reach up to 30 cm in length, attaching themselves to the intestinal wall, leading to symptoms like inflammation, fever, and diarrhea. Severe cases can result in complications if the worms migrate to other parts of the body.
- Camallanus species infect the stomachs of certain freshwater fish, with infection typically noticed as worm-like structures protruding from the fish.
- These worms have an indirect life cycle where female worms carry eggs inside fish bodies. The eggs hatch into larvae within fish bodies, are excreted into the water via fish feces, and are ingested by copepods or other crustaceans.
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Description
Learn about the life cycle of the parasitic roundworm Ascaris lumbricoides which causes Ascariasis, a common disease affecting a large portion of the global population. Understand how infection occurs, the migration process of the larvae, the growth of adult worms, and common symptoms associated with this parasitic infection.
