Brief Summary

Read full entry

Brief Summary

Human echinococcosis (hydatidosis, or hydatid disease) is caused by the larval stages of cestodes (tapeworms) of the genus Echinococcus.

The larval stage of the cestode (tapeworm) E. vogeli cause polycystic echinococcosis, one of the less common forms of human echinococcosis (hydatidosis, or hydatid disease), in Central and South America.

The adult E. vogeli (up to 5.6 mm long) resides in the small bowel of the definitive host, a bush dog or domestic dog. Gravid proglottids (bisexual reproductive segments) release eggs that are passed in the feces. After ingestion by a suitable intermediate host (a rodent), the egg hatches in the small bowel and releases an oncosphere that penetrates the intestinal wall and migrates through the circulatory system into various organs (e.g., liver and lungs), developing both externally and internally and resulting in multiple vesicles.

(Centers for Disease Control Parasites and Health website)


Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Shapiro, Leo

Source: EOL Rapid Response Team


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!