Polio boosters to be offered to under-10s after virus is picked up in eight London boroughs – including Hackney
Health experts confirm polio has spread within the community, but stressed that risk to wider population is still low
jane clegg
Poliovirus detected in sewage from north-east London – with UK health bosses urging people to get vaccinated
Health Security Agency triggers national incident after finding two samples of the same virus at Beckton treatment works