World health organization

10 facts on immunization

A child is given polio vaccination.

Polio cases have decreased by over 99%

Since 1988, polio cases have decreased by over 99%, from an estimated 350 000 cases to 1352 reported cases in 2010. The reduction is the result of the global effort to eradicate the disease. Only three countries – Afghanistan, Nigeria and Pakistan) – remain polio-endemic, down from more than 125 in 1988.

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