On the brink of eradication, a dreaded disease has returned to strike in Africa. The Nigerian government reveals that two children have been paralyzed by wild polio in northern Borno State. Africa 54 health reporter Linord Moudou spoke to Dr. Steve Cochi, Senior Advisor to the Director of the Global Immunization Division with the U.S. Centers for Disease Control and Prevention, and asked his reaction on this latest development.