How is schistosomiasis transmitted?

Updated: Jun 11, 2020
  • Author: Shadab Hussain Ahmed, MD, AAHIVS, FACP, FIDSA; Chief Editor: Michael Stuart Bronze, MD  more...
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Human beings become infected with schistosomiasis when larval forms of the parasite, released by freshwater snails, penetrate their skin during contact with infested water. In the body, the larvae develop into adult schistosomes. Adult worms live in the blood vessels, where the females release eggs. Some of the eggs are passed out of the body in the feces or urine to continue the parasite life cycle. Others become trapped in body tissues, causing an immune reaction and progressive damage to organs.

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