In endemic areas such as eastern part of the Mediterranean region, Northern Africa, Southern and Eastern Europe, at the southern tip of South America, in Central Asia, Siberia and Western China, the incidence of echinococcosis is more than 50 per 100,000 persons.^[1]

In endemic areas such as eastern part of the Mediterranean region, Northern Africa, Southern and Eastern Europe, at the southern tip of South America, in Central Asia, Siberia and Western China, the incidence of echinococcosis is more than 50 per 100,000 persons.

• Echinococcosis commonly affects elderly age group above 55 years.

• Men and women are affected equally by echinococcosis.

• There is no racial predilection for echinococcosis.

• E. granulosus is present virtually worldwide since there are very few countries that are considered to be completely free of E. granulosus.^[2]
• E. multilocularis mainly occurs in the northern hemisphere, including central europe and the northern parts of europe, asia, and north america.^[3]
• The other two species of Echinococcus, E. vogeli and E. oligarthus are limited to central and south america. Furthermore, infections by E. vogeli and E. oligarthus (polycystic echinococcosis) are considered to be the rarest form of echinococcosis.^[4]