Nowhere in the north-east of England and Cumbria has the childhood measles, mumps and rubella (MMR) vaccination rate of 95% needed to achieve the "herd immunity" at which point disease does not spread, latest figures show.
Middlesbrough has the lowest rate in the region at 82.5%, but up from 77.9% the previous year.
The mother of one child - too young to have the MMR but who could have been protected by herd immunity - said the experience of her having measles at the age of seven months had been "terrifying".
Medical director for The North East and North Cumbria Integrated Care Board, Dr Catherine Monaghan, warned measles was dangerous and "one of the most infectious diseases in the world".

