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Pork bladder worm (Cysticercus cellulosae) - Human tapeworm (Taenia solium)

(509) Cysticercus is the name of the larva or cyst which forms part of the life cycle of the tapeworm Taenia solium found in the human. Pigs are the natural intermediate host.

The life cycle

Segments of the tapeworm in people are passed out in the faeces. They contain eggs which are eaten by the pig. The cysticercus which measures 18mm in diameter, develops in the skeletal or cardiac muscles of the pig and the cycle is completed by the human eating inadequately cooked infected pork.

Clinical signs

These are minimal but infected carcasses are condemned at meat inspection.


Cysticerci are identified at meat inspection.


  • No highly effective compounds are available for treatment in the pig.
Management control and prevention
  • This is achieved by preventing pig access to human faeces, by meat inspection and the burning of infected carcasses.

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