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
The constituency of Washington and Sunderland West includes the UK's largest car plant, which was opened by Nissan in 1984.
This seat was formed prior to the 2010 General Election, taking in Sunderland city centre and the Ryhope area to the south.
The constituency of Stockton South includes relatively affluent areas like Yarm and Eaglescliffe.