Eradication of Poliomyelitis, Report to Executive Board, January 2018

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There were three countries still endemic for WPV in 2017, namely, Nigeria, Afghanistan and Pakistan. In addition, circulating vaccine derived poliovirus was seen in Syria and the Democratic Republic of the Congo.
Full text of the report is at http://apps.who.int/gb/ebwha/pdf_files/EB142/B142_37-en.pdf