Echinococcosis/hydatidosis is a worldwide parasitic disease that affects both humans and other mammals; such as sheep, dogs, rodents and horses.The present work was conducted to review the results of studies have been performed in Iran during last decade. Results of Abattoir-base studies of hydatidosis in the farm animal (cattle, sheep and goat), prevalence of Echinococcus granulosus in dogs and frequency of hydatidosis in human population collected and statistically analyzed. Hydatidosis in human population ranged between 0.6-123 per 100000. Hydatidosis was most frequent in khorasan razavi, Esfahan, Khoozestan and East Azerbayzan respectively. Prevalence of Echinococcus granulosus in dogs ranged between 1.3-63.3%. Esfahan, Hamedan, Mazandaran and east Azerbayzan were the most contaminated areas. Prevalence of hydatidosis in farm animal ranged between 4.38-18.71%. Hydatidosis was most frequent in Khorasan Razavi, East Azerbayjan, Hamedan and Mazandaran respectively. Correlation between proportion of contamination in dogs and prevalence of hydatidosis in human and farm animal population was statistically significant (p<0.05). There was no significant association between proportion of hydatidosis in human and farm animal population. Identification of most contaminated areas and collaboration between veterinarians and public health workers in performing of Epidemiologic studies is essential for the successful control of hydatidosis.

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