Echinococcosis by Echinococcus granulosus is a problem of public health in Peru. The objective of the study was to describe the clinical and epidemiological characteristics of cystic echinococcosis cases diagnosed between 1991 and 2002 in the department of Junín in the central Andes of Peru. It was an observational study, historical cases series design. We reviewed the clinical records in hospitals of Junín to identify cases that concurred with the definition of probable and confirmed case. 1100 cases were identified, the average age ranging between 29.2 ± 18.3 years of age, 80.5% (886) confirmed. The disease is more common in women (p = 0,000022) and in who hadn’t completed elementary education (p= 0,001083). Out of all the series, the group of 5 to 19-year olds presented four hundred and three cases (36.7%). Five hundred and eighty one cases (52.8%) had a background of exposure to...