[Measles immunization and its problems].

After the administration of efficient and reliable vaccines many of the infectious diseases have declined dramatically. Measles in the developed countries has declined also dramatically since the introduction of measles vaccine, but still remains an important pediatric problem. When given at age 15 months or later, the live further attenuated virus vaccine provides durable immunity in over 90 percent. Measles vaccine failure has been associated with the use of inactivated measles vaccine vaccination before 1 year of age and errors of vaccine handling.