The Expanded Programme on Immunization (EPI) of the World Health Organ
ization has a global target of reducing measles incidence by 90% and m
ortality by 95% from pre-EPI levels by 1995. Both developed and develo
ping countries that have given priority to measles control have substa
ntially reduced measles morbidity and mortality, and some have come cl
ose to eliminating measles. A variety of vaccination schedules and str
ategies have been used, which reflect the differing program goals, hea
lth services infrastructure, and availability of resources in differen
t countries. Failure to control measles has usually been due to a fail
ure to implement planned strategies adequately. The highest priority i
n measles control is to assist countries, especially the lowest-income
countries, to implement vaccination programs more effectively.