After finding vaccine-derived poliovirus in London sewer samples, the NHS plans to contact parents of unvaccinated children.
Health authorities declared a national incident on Wednesday following the return of poliovirus for the first time in decades.
The virus was detected at the Beckton sewage treatment works, which covers a population of four million in north and east London.
In response, the UK’s health service is starting a major drive of children’s polio vaccines.
NHS plan to contain polio by contacting parents of unvaccinated children as source search continues | 👀👀 https://t.co/Eof0zYAY4T
— Orwell Huxley’s Ghost (@Tinkeringhalo2) June 23, 2022
So, vaccine-derived poliovirus is the culprit found in the sewer samples.