2010年的大多数病例都是出现在一些无小儿麻痹症的国家，这些国家由于对于疫苗注射麻痹结果导致病毒从边境传入。

The majority of cases in 2010 were in countries that had been polio-free until the virus travelled back across borders and caused outbreaks in areas where people had gotten lax about vaccination.

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他是一位无小儿麻痹症世界声音的拥护者。

He is a vocal advocate for a polio free world.

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只要WPV传播不是在每一个地方都被打断(特别是在一些小儿麻痹流行国)，所有的无小儿麻痹症国家和地区仍有再感染的风险。

As long as WPV transmission has not been interrupted everywhere, all polio-free countries and areas remain at risk of reimportation, particularly from the countries where polio remains endemic.

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