An outbreak of suspected Norovirus at the Commonwealth Games athletes' village has now affected 53 workers just days before the Games is due to start.
No athletes or team officials have been taken ill since the cases of the vomiting bug were first reported on Wednesday.
The Games opening ceremony takes place on Wednesday at Glasgow's Celtic Park.
First Minister Alex Salmond said organisers were confident they had identified the probable source of the outbreak, a temporary facility in use during construction work in the security area.
Mr Salmond said: "We're confident we've identified the cause of the outbreak, a temporary facility which was not as it should be.
"We've taken the measures necessary. We've got a terrific health service and they are on the job. 'We are confident that we're getting to grips with the cause. We will see more cases but it will tail off over the next few days."