Hydatid Disease Echinococcus granulosus 。Definitive host: Dogs,wolves 。Intermediate host: Brain Sheep and other herbivores; Left orbit Humans (eye socket) 。Transmitted by ingesting E. granulosis eggs 。Treatment is surgical Figure 25.23 Hydatid Disease Figure 25.23 • Echinococcus granulosus • Definitive host: Dogs, wolves • Intermediate host: Sheep and other herbivores; Humans • Transmitted by ingesting E. granulosis eggs • Treatment is surgical