[Hydatidosis: epidemiological study in the eastern region of the province of Formosa].

In order to carry out an epidemiological survey of hydatidosis in an area of 1250 km2- in the west of Formosa (Argentina), 19 rural holdings were randomly chosen with a total of 78 settlers, 74 dogs, 972 goats and 2353 cattle. Between March and September 1982, 2171 cattle were slaughtered under veterinary supervision in the municipal abattoir of Las Lomitas, main town in the area Hydatid cysts were found in 63 animals (2.9%). In this area, the slaughtering of goats population, granted special importance to a study of the parasitic cycle of Echinococcus granulosus. Using arecoline hydrobromide the adult cestode was found in 3 of the 74 dogs (4%) on two holdings (10.5%) All the 78 settlers gave negative results to the Arc 5 Double Diffusion Test (DD5) for diagnosis of human hydatidosis.