During the last 10 years 70 cases of echinococcosis were diagnosed in the Department of Infectious Diseases, Medical University School of Białystok, of whom 63 were Echinococcus (E.) granulosus infections. The Urban population (70%) and women (60%) dominated among infected persons. Seven cases were due to E. multilocularis infection. A family and endemie focus of E. multilocularis human invasion has been identified.