Echinococcus granulosus

Echinococcus granulosus, also known as the hydatid worm, is a small tapeworm species that is found globally. It is known for causing a disease called hydatid disease, cystic echinococcosis or hydatidosis.

Life Cycle

The life cycle of Echinococcus granulosus involves two hosts. The definitive hosts are primarily dogs and other canids, while the intermediate hosts are usually sheep, but can also be other livestock or humans.

Infection and Symptoms

Humans can become infected with Echinococcus granulosus by ingesting its eggs. This can occur through direct contact with an infected dog or by eating food or drinking water contaminated with the eggs. Once ingested, the eggs hatch in the small intestine and the larvae migrate to various organs, particularly the liver and lungs, where they form cysts.

Diagnosis and Treatment

Diagnosis of Echinococcus granulosus infection is usually made by imaging studies, such as ultrasound, CT scan, or MRI. Serological tests can also be used. Treatment typically involves surgery to remove the cysts, along with medication to kill the larvae.

Prevention

Prevention of Echinococcus granulosus infection involves regular deworming of dogs, proper disposal of offal to prevent dogs from eating it, and good hygiene practices, such as washing hands before eating and thoroughly washing fruits and vegetables.

See Also

• Echinococcosis
• Tapeworm
• Zoonosis

• Scolex of Echinococcus granulosus
  Scolex of Echinococcus granulosus
• Hydatid disease caused by Echinococcus granulosus
  Hydatid disease caused by Echinococcus granulosus
• Defecating brown dog in Sri Lanka
  Defecating brown dog in Sri Lanka
• Boiling sheep livers containing hydatid cysts (Echinococcus granulosus)
  Boiling sheep livers containing hydatid cysts (Echinococcus granulosus)