There has been a steady increase in the number of cases of measles in the North East - with around 30 new cases being diagnosed every week.
The most affected are children living on Teesside and the last outbreak was in Hartlepool in 2009 where clinics were set up so more children could be vaccinated.
Professor Peter Kelly, the director of Teesside's measles outbreak control team, spoke to ITV News about how parents can protect their children against the disease.
More top news
On a tour of the North East today, the Chancellor George Osborne made a series of promises which he claimed would help create 50,000 jobs.
Hundreds of people are expected to take part in two separate demonstrations in Newcastle tomorrow.
Teesside car parts manufacturer Nifco has announced a new £50 million deal with US car giant Ford.