Final answer:
Echinococcus granulosus is more common than Echinococcus multilocularis. It causes a disease called hydatid disease. Treatment involves surgery and chemotherapy.
Step-by-step explanation:
Echinococcus granulosus and Echinococcus multilocularis are both species of tapeworms that cause infections in humans. Echinococcus granulosus causes a disease called hydatid disease or cystic echinococcosis. It is more common than Echinococcus multilocularis.
Echinococcus granulosus is found in dogs, as well as intermediate hosts such as sheep, pigs, goats, and cattle. The tapeworm eggs are transmitted through feces and can be a risk for individuals in agriculture. The larvae invade internal organs and form hydatid cysts, often in the lungs and liver, which can be detected through imaging.
Treatment for cystic disease involves surgery to remove the cysts and chemotherapy with anti-helminthic drugs. Echinococcus multilocularis, on the other hand, causes a disease known as alveolar echinococcosis, which is less common but more dangerous.