Around 250 people are suspected to have contracted salmonella, following a food festival in Newcastle.
Eight cases have been confirmed. The outbreak began after the Street Spice event which took place in the city between 28 February and 2 March.
The authorities are working with the businesses which ran thirteen separate stalls to try to identify the source.
Those suspected of picking up the bacteria have reported flu-like symptoms and stomach pain.
More top news
Seven people have been arrested on suspicion of manslaughter after a man died following an incident at nightclub in Durham.
Emma Jesson brings you Saturday night's forecast
Sandiford, a former legal secretary originally from Redcar, was convicted of drug smuggling offences and sentenced to death in 2013.