[Epidemiology of measles (author's transl)].

A detailed analysis of epidemiology of measles in pre-vaccinal era is reported for both isolated, underdeveloped and developed populations, together with the most recent knowledge on epidemiological changes tooking place in those countries which introduced large-scale vaccination with live, further attenuated measles vaccines: reduction of morbidity mortality and complication rates, morbidity age shift, etc. Results obtained in U.S.A., where vaccination was introduced in 1963, are analyzed also considering that it never spanned above 66% of children 1-4 year. Suggestions derive after the american experience for a correct strategy of the incoming vaccination in this Country.