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Violence, Insecurity Blocking Polio Eradication

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Violence, Insecurity Blocking Polio Eradication
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After three decades and 15 billion dollars, just three countries still harbor polio. Those three countries, Pakistan, Afghanistan and Nigeria, all suffer from violent insurgencies. A new study is one of the first to document how a lack of security sets back efforts to eradicate the paralyzing disease. VOA's Steve Baragona has a report.

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