[The expanded WHO vaccination program]

The Expanded Programme on Immunization (EPI) was established by the World Health Assembly in 1974. The EPI goal is to reduce morbidity and mortality by making immunization services available for all children of the world by 1990. General considerations on EPI vaccines, their security and efficacy, the age of administration and the number and spacing of doses are discussed. Vaccine administration, including strategies and tactics, cost effectiveness, immunization coverage and disease surveillance are reviewed.