What is the life cycle of a cestode in tapeworm infestation?

Updated: Apr 15, 2021
  • Author: Lisandro Irizarry, MD, MBA, MPH, FACEP; Chief Editor: Jeter (Jay) Pritchard Taylor, III, MD  more...
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Typically, a cestode requires one or more intermediate hosts in their life cycle. The life cycle is as follows:

  • The eggs are passed into the environment from the primary host.

  • The eggs are ingested by an intermediate host in which they hatch.

  • The larvae enter the tissues of the intermediate host and encyst.

  • The primary host ingests the cysts in the flesh of the intermediate host.

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