LONDON, April 30 (Reuters) – The world is closer than ever to being able to wipe out polio, international experts said on Thursday, with zero cases of the crippling disease recorded across all of Africa this year and fewer than 25 globally.

Source: http://feeds.reuters.com/~r/reuters/AfricaNigeriaNews/~3/AQKIjdXSi_M/idAFL5N0XR4VV20150430