An outbreak of e.coli may be linked to burgers eaten at a concert venue, health officials said.
Six people have been infected with the e.coli O157 bug in Scotland and one in Cumbria.
Investigators have linked the cases to the SSE Hydro in Glasgow, a major entertainment venue.
A statement from NHS Greater Glasgow and Clyde (NHS GGC) said: “There is an association with the consumption of burgers at the Hydro but other food items are also being considered.”
Anyone who visited the Hydro between January 17 and 25 and has experienced symptoms including stomach cramps, diarrhoea, nausea and fever is advised to contact their GP. All seven patients are recovering at home.
One of the cases is from the NHS GGC area, two are from the NHS Lanarkshire area, three from NHS Lothian and one is from Cumbria.
Dr Gillian Penrice, consultant in public health medicine at NHS GGC, said: “Investigations are under way to identify if there is any common source. While there is no conclusive evidence, our initial investigations have indicated that there may be a link to the consumption of burgers at the SSE Hydro and Glasgow City Council environmental health officers are working closely with the vendors to ensure all appropriate food hygiene standards are being met.”
The Hydro is a participating venue in the Commonwealth Games in July when the 12,000-seat arena will host gymnastics and netball.
The shows playing at the complex during the period under investigation were Top Gear, Del Amitri and Celtic Connections.
The Hydro said in a statement: “We are awaiting further details to establish the exact cause of this isolated incident and our catering partners have been working closely with environmental health.
“The initial review of our caterers’ standard procedures have been found to be satisfactory and EHO have seen nothing in their processes and practices which concerns them.”