Nigerian military helicopters have rushed polio vaccines to dangerous parts of the country’s north east, where Boko Haram operates and where two toddlers paralysed by the virus were recently discovered, health officials said.
The World Health Organisation said the wild virus has circulated undetected for years in the area where the Islamic extremists have prevented vaccinations.
Borno state health commissioner Ibrahim Miringa said recent attacks by the Islamic extremists prevented the emergency operation from getting health workers to two parts of Borno state where the children with polio were found.
Boko Haram has killed polio vaccinators in the past.
He said the two children, aged under two, were among refugees recently arrived from areas newly freed from Boko Haram.