Chapter

Gut and tissue nematode infections acquired by ingestion

David I. Grove

in Oxford Textbook of Medicine

Published on behalf of Oxford University Press

Published in print May 2010 | ISBN: 9780199204854
Published online May 2012 | e-ISBN: 9780199570973 | DOI: http://dx.doi.org/10.1093/med/9780199204854.003.070905_update_001

Series: Oxford Textbooks

Gut and tissue nematode infections acquired by ingestion

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Ascaris lumbricoides (the giant roundworm) is widespread in the tropics and subtropics where sanitation is poor and the soil is contaminated with its eggs. Ingested eggs hatch in the small bowel, cycle through the bloodstream and lungs, then return to the small bowel and develop into adult worms 15 to 30 cm long. Most infections are asymptomatic, but there may be pulmonary infiltrates with eosinophilia, abdominal discomfort and—in children with heavy infections—intestinal obstruction. Infection is diagnosed by finding eggs in the faeces. Treatment is with pyrantel, mebedenazole, or albendazole....

Chapter.  6242 words.  Illustrated.

Subjects: Medical Microbiology and Virology ; Infectious Diseases

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