![]() ![]() Įchinococcus granulosus was first documented in Alaska but is distributed worldwide. Symptoms developed depend on location of the cyst, but most occur in the liver, lungs, or both. Cysts may not initially cause symptoms, in some cases for many years. Echinococcal cysts are slow growing, but can cause clinical symptoms in humans and be life-threatening. The larval stage results in the formation of echinococcal cysts in intermediate hosts. Transitions between life stages occur in intermediate hosts. Wild or domesticated ungulates, such as sheep, serve as an intermediate host. Definitive hosts are where parasites reach maturity and reproduce. granulosus involves dogs and wild carnivores as a definitive host for the adult tapeworm. granulosus have been identified, and all but two are noted to be infective in humans. ![]() granulosus also has a rostellum with hooks. granulosus has four suckers on its scolex ("head"), and E. The average number of eggs per gravid proglottid is 823. The adult tapeworm ranges in length from 3 mm to 6 mm and has three proglottids ("segments") when intact-an immature proglottid, mature proglottid and a gravid proglottid. His areas of expertise include orthopedic medicine and surgery, veterinary oncology and chemotherapy, and general and advanced soft-tissue surgery.Echinococcus granulosus, also called the hydatid worm, hyper tape-worm or dog tapeworm, is a cyclophyllid cestode that dwells in the small intestine of canids as an adult, but which has important intermediate hosts such as livestock and humans, where it causes cystic echinococcosis, also known as hydatid disease. Ware is currently the Medical Director of University Animal Hospital (VCA) and is also the owner of two other hospitals, including Laveen Veterinary Center and Phoenix Veterinary Center. He received both his undergraduate degree in microbiology and his Doctorate of Veterinary Medicine from The Ohio State University.ĭr. Evan Ware is a veterinary practitioner in Phoenix, Arizona.
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