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
Today Magpies fans were invited to see an open training session of Newcastle United and their three new singings.
A look ahead at the forecast for the Tyne Tees region.
Fantastic photographs celebrate the heritage of the North East. Historic England's exhibition in Newcastle opens on August 10th.