We are down to the polio endgame with an extremely small number of new cases being detected. Follow this story for weekly updates on polio progress.
Polio this week as of 22 November 2017
 
Note: Last week's report contained a significant statistical error. The current report reflects the correct numbers.
 
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Headlines:  New on polioeradication.org: Read why trains are the new setting for polio eradication in Pakistan and how serosurveys map child immunity in Afghanistan.
   On the 14 November, the 15th IHR Emergency Committee convened to review the risk of international spread of poliovirus. The committee agreed that the risk of international spread of poliovirus remains a Public Health Emergency of International Concern (PHEIC), and recommended the extension of revised Temporary Recommendations for a further three months.
   To mark World Children’s Day, we reported on how the polio eradication programme helps deliver a bright future to children in Nigeria.

Afghanistan:  Four new wild poliovirus type 1 (WPV1) positive environmental samples have been reported. Three samples were collected in Kandahar district, Kandahar province, and one sample was collected in Kabul district, Kabul province.
   No new WPV1 cases were reported this week. The total number of officially reported WPV1 cases in Afghanistan in 2017 remains ten.

Pakistan:  One new wild poliovirus 1 (WPV1) positive environmental sample was reported in the last week. The sample was collected in Karachi district, Sindh province.
   No new WPV1 cases have been reported. The total number of WPV1 cases in 2017 in Pakistan remains five.
 
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 and no cases have been reported in 2017.  The most recent case had onset of paralysis on 21 August 2016 in Monguno Local Government Area, Borno.
   Nigeria continues to implement an emergency response to the detected WPV1 strain and circulating vaccine-derived poliovirus type 2 (cVDPV2) strains affecting the country (last detected in 2016).