Which strategy has contributed the most toward eradicating polio?

Question

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Vaccination has been the most effective strategy in eradicating polio. The use of the polio vaccine has drastically reduced the number of cases of polio worldwide, with the number of cases dropping from around 350,000 in 1988 to just 33 reported cases in 2018. Education, migration, and patent rights may have played a role in the eradication effort, but vaccination has been the most critical component.

Which Strategy Has Contributed the Most Toward Eradicating Polio