What polio's UK presence means for global health - Nature.com

A form of polio derived from the vaccine is likely circulating in the UK, highlighting the ongoing need for polio vaccination worldwide.

Polio samples were found in sewage in east London, less than 10 miles from the Tower of London (pictured), lit in purple to mark World Polio Day last October.Credit: PA Images/Alamy United Kingdom h… [+6384 chars]

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