This follows a recent discovery in the UK: "A form of polio derived from the vaccine is probably circulating in the United Kingdom, highlighting the ongoing ne

This follows a recent discovery in the UK: "A form of polio derived from the vaccine is probably circulating in the United Kingdom, highlighting the ongoing need for polio vaccination worldwide." https://www.nature.com/articles/d41586-022-01802-z https://www.nature.com/articles/d41586-022-01802-z