A Polio update as of 24 May 2017
Headlines: The World Health Assembly (WHA) is meeting this week in Geneva, Switzerland. Ministers of Health and public health professionals from around the world are discussing global public health issues, including the global drive to eradicate polio. The Global Polio Eradication Initiative (GPEI) secretariat has prepared a status report, which will inform the discussions by Member States.
Two separate outbreaks of circulating vaccine derived poliovirus type 2 (cVDPV2) have been reported in the Democratic Republic of the Congo, one in Haut Lomami province and one in Maniema.
Afghanistan: No new wild poliovirus type 1 (WPV1) cases were reported in the past week. The total number of cases for 2017 remains three, and for 2016 remains 13. The most recent case had onset of paralysis on 21 February, from Kunduz province.
One new environmental sample positive for WPV1 was reported in the past week in Lashkargah district, Hilmand province, with date of collection on 26 April.
With most of Afghanistan polio-free, efforts are focused on continuing to strengthen operations, in close coordination with Pakistan, to address remaining low-level transmission in the common reservoir area of the Quetta-Kandahar corridor.
Pakistan: No new wild poliovirus type 1 (WPV1) cases were reported in the past week. The total number of WPV1 cases for 2017 remains two, and for 2016 remains 20. The most recent case had onset of paralysis on 13 February, from Diamir district, Gilgit Baltistan.
Seven new positive WPV1 environmental samples were reported in the past week; three in Balochistan province, with two in Quetta district and one in Killa Abdullah; two in Rawalpindi district, Punjab province; one in Sukkur district, Sindh province; and one in CDA, Islamabad. Dates of collection were between 10 April and 10 May.
The year 2016 saw the lowest ever annual number of polio cases in the country but poliovirus continues to be isolated through environmental surveillance over a significant geographical range. Efforts are ongoing through implementation of the national emergency action plan to address remaining gaps in coverage and surveillance, in close coordination with neighbouring Afghanistan.
Nigeria: No new cases of wild poliovirus type 1 (WPV1) were reported in the past week. The total number of WPV1 cases for 2016 remains four. The most recent case had onset of paralysis on 21 August in Monguno Local Government Area (LGA), Borno.
Nigeria continues to implement emergency response to the detected WPV1 strain and circulating vaccine-derived poliovirus type 2 (cVDPV2) strains affecting the country.