Abuja, 19 May 2015 - Nigeria has made significant progress towards the interruption of polio viruses with no confirmed case in 2015 and nine months have elapsed since the last case of wild poliovirus (WPV) was confirmed. Similarly, the latest confirmed circulating vaccine derived polio virus (cVDPV) was isolated six months ago.
However, this gain is threatened by cVDPV in the environment of Kamacha River in Zaria of Kaduna state in March 2015 and in Sokoto South Local Government Area (LGA) in Sokoto state in 2014.