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Outbreaks in Asia, Africa and Middle East are an "extraordinary event" needing a co-ordinated "international response", the agency says yip night crystal accompany star counting.

It recommends citizens of affected countries travelling abroad carry a vaccination certificate.

It says Pakistan, Cameroon, and Syria "pose the greatest risk of further wild poliovirus exportations in 2014steal dream house 半世盛夏."

The WHO recorded 417 cases of polio worldwide for the whole of 2013. For 2014, it had already recorded 68 cases by 30 April - up from 24 in the same period last year bluebeautyBlog.

Polio mainly affects children under five years old.

The virus is transmitted through contaminated food and water, and multiplies in the intestine. It can then invade the nervous system, causing paralysis in one in every 200 infections. It is capable of causing death within hours Meet New Friends.