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Vaccine-related disease reduction

History shows that a

decrease in immunization coverage

sets the stage for the reappearance of disease

in previously

protected populations. However, with stable and high vaccination

coverage, disease declines and, for some diseases, may be


For example, polio cases have decreased by over 99% since 1988,

from an estimated 350,000 cases then, to 22 reported cases in




As a result of the global effort to eradicate the disease,

more than 16 million people have been saved from paralysis.

According to WHO, as long as a single child remains infected,

children in all countries are at risk of contracting polio. Failure to

eradicate polio from these last remaining strongholds could result

in as many as 200,000 new cases every year, within 10 years, all

over the world