We're All Responsible For Creating A Polio-free

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With Polio, We've Gone Several Years With No Polio In All Of Africa, But Now With This We're Having To Go And Mop Up In That Whole Region, So It's A Bit Of A Setback For Polio. So In Parallel We Have To Go Back And Get Rid Of Those Cases.

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Natural Epidemics Can Be Extremely Large. Intentionally Caused Epidemics, Bioterrorism, Would Be The Largest Of All.

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