Echinococcosis

Parasitic Diseases, Cestodes (Tapeworms)

Animals Involved

Dogs, other canids, hyenas are definitive hosts; sheep, goats, cattle, water buffalo, swine, camels, cervids, rodents, other mammals, or marsupials are intermediate or aberrant hosts; strains of parasite can be adapted to different intermediate hosts

Known Distributions

Worldwide, strains differ in distribution

Probable Means of Spreading

Ingestion of tapeworm eggs in food or water, to mouth on hands; eggs stick to fur and hands

Clinical Manifestations in People

Cause space­occupying lesions of organs, especially lung, liver, also other organs, rarely CNS; cyst grows slowly, can cause death if untreated; rupture can cause allergic reactions, dissemination of cysts

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