Supplementary statement on measles elimination in canada.

Elimination of indigenous measles by the year 2000 is a highly desirable goal, shared by all countries of the Americas. To achieve it in Canada, a two-dose immunization schedule must be implemented and completed by all children within the next few years. This is best achieved by beginning the routine administration of a second dose of vaccine to a specified cohort of young children and by implementing short-term "catch-up" programs to revaccinate all children over the recommended age for the second dose. Considerable latitude is possible in the design of catch-up programs but common initiation periods among provinces and territories would aid public education activities, facilitate immunization programs and reduce costs through large volume vaccine purchases.