A school based measles vaccination programme has started in schools across Teesside, after the number of cases increased again.
There have been 150 confirmed cases of measles in the North East since the recent outbreak.
Almost all the reported cases are on Teesside, with just three in County Durham and none in Newcastle or Gateshead.
The NHS is advising people to contact their GP about vaccinating their children, or to take advantage of the schools programmes.
Pupils at a school on Teesside have been learning that "gizit ere" is not an acceptable proxy for "please give it to me".
Teachers at Sacred Heart Primary believe use of the local dialect is encouraging their students to write words incorrectly in lessons.
They have even tried to get parents on board, writing to them about which words used in everyday parlance are incorrect.
ITV News reporter Damon Green reports from Middlesbrough.