Western Pacific Regional Plan of Action for Measles Elimination
Central to this Regional Plan is a strategy for providing a second opportunity for measles immunization. A single dose of measles vaccine protects about only 85% of children, but 95% of the population must be immune to stop transmission. A second dose, given after the age of one year, will protect 99% of children. Therefore, to eliminate measles, children must have a second opportunity that reaches practically every child.