Vaccine-derived poliovirus is a weakened strain of the virus that has changed over time and behaves more like the naturally occurring poliovirus.
At a dedicated meeting on polio, Governments from the WHO African Region committed to ending all remaining forms of polio and presented a scorecard to track progress towards its eradication.
Since 2018, 23 countries in the region have experienced outbreaks and more than half of the global 1071 cVDPV cases were recorded in Africa.
Read more at: https://news.un.org/en/story/2021/08/1098522
