In 2009, India accounted for half of the world’s polio cases. Here’s how it became polio free

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In 2009, India accounted for half of the world's polio cases. Here's how it became polio free




In 2009, India accounted for half of the world’s polio cases. Here’s how it became polio free

In 2009, India accounted for half of the world’s polio cases. Here’s how it became polio free

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