Dr Zikrullah Giwa, the Polio Technical Consultant to the Northern Governors' Forum (NGF), said Thursday that Nigeria recorded four cases of wild polio virus in the past 10 weeks.
Giwa who made this known at a meeting of the forum in Kaduna, said the cases were recorded in Kaduna, Sokoto, Borno and Zamfara states.
"In 2012, Nigeria has four cases of wild polio virus in four states compared to four cases in three states for the same period in 2011."
According to him, the current National Epidemiology the country recorded 62 cases of the wild polio virus in 2011 in eight states.
Giwa stated that the total number of "circulating vaccine derived polio virus" (cVDPV2) was 35 in 10 states of the federation in 2011.
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