Polio re-emerges in many countries

The World Health Organisation has warned that the crippling disease polio has re-emerged as a public health emergency, after new cases surfaced in a range of countries.

"The conditions for a public health emergency of international concern have been met," WHO assistant director general Bruce Aylward told reporters in Geneva following crisis talks on the crippling and potentially fatal viral disease that mainly affects children under the age of five.

Check out this video and learn firsthand from polio survivor Marion Croft about what it was like to contract polio as a child and to live with its disabling effects...