Nigeria: Polio in Nigeria 'shows big increase'

A four-fold increase in polio has been reported in Nigeria, with the disease spreading to other countries, a World Health Organisation official says. Forty-three cases were reported in Nigeria this year, compared to 11 last year, the official, Thomas Moran, said. Curbing the polio virus in Nigeria is key to eradicating the crippling disease in Africa, he said.