01:146:328 Lecture Notes - Lecture 17: Echinococcosis, Echinococcus, Betabaculovirus
20 May 2016
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Document Summary
Cysticercosis: caused by taenia from juvenile tickworm in human. Proglotids are carried back into stomach by reverse infection: neural disease: Epileptic seizures and cause acute death: treatment: praziquantel. Echinococcus: history, granulosis (cystic), found in dogs and e. multilocularsis (alveolar) found in foxes and resides in lungs. Both have hydatid cyst and tidosis which need surgery to remove. Made up of 4 large segments: head, neck, proglatids, then gravids: life cycle: The adult echinococcus granulosus (3 to 6 mm long) resides in the small bowel of the definitive hosts, dogs or other canids. Gravid proglottids release eggs that are passed in the feces. In these organs, the oncosphere develops into a cyst that enlarges gradually, producing protoscolices and daughter cysts that fill the cyst interior. The definitive host becomes infected by ingesting the cyst-containing organs of the infected intermediate host. After ingestion, the protoscolices evaginate, attach to the intestinal mucosa, and develop into adult stagesin 32 to 80 days: pathology:
