Over one million children were immunised against polio virus last month in Osun State.
The Chairman, House of Assembly Committee on Health, Leke Oguntola, who represented Governor Rauf Aregbesola, said this at the launch of the second round of the National Immunisation Plus Days in Osogbo, the state capital.
The governor said no case of Wild Polio Virus (WPV) had been recorded in the state in five years.
He noted that effective and active surveillance was carried out regularly by the Disease Control Unit in collaboration with the World Health Organisation (WHO).
According to him, Osun was among the best performing states in immunisation in 2014, with coverage of 92 per cent in Penta 3 and OPV 3.