Nigeria: Polio cases dropping but still highest worldwide, says WHO

The number of new polio cases recorded in Nigeria has declined sharply in recent months, but the country still accounts for more than half of all new cases of the disease recorded worldwide, the UN World Health Organisation (WHO) said. WHO said in its latest surveillance report that 41 cases of polio were recorded in 12 states of Nigeria between 27 February and 16 April, down from 86 cases registered in 23 states of the federation during the same period in 2004.