Hydatidosis; Hydatid disease, Hydatid cyst disease
Echinococcus is an infection caused by the Echinococcus granulosus or Echinococcus multilocularis worm.
Echinococcus is common in:
In the United States, the disease is very rare. However, it has been reported in California, Arizona, New Mexico, and Utah.
Humans become infected when they swallow eggs in contaminated food. The infection is carried to the liver, where cysts form. Cysts can also form in the:
Risk factors include being exposed to:
King CH, Fairley JK. Cestodes (Tapeworms).In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 29.
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