Eight patients remain in hospital after an outbreak of Legionnaires' disease.
A total of 16 people have been confirmed as contracting the disease in Stoke-on-Trent, Staffordshire, since last Tuesday.
No details have yet been released of a patient who died on Saturday.
The cause of death has also not yet been revealed.
The Health Protection Agency said there were no new cases of the disease to report in Stoke-on-Trent today. All those affected are aged between their late 40s and mid 70s.
A spokesman for University Hospital of North Staffordshire said: "Eight patients remain in hospital and all are in a stable or improving condition.
"Three patients were well enough to go home today and have been discharged."
A spokesman for Glenfield hospital in Leicester said: "We are treating a patient transferred from the University Hospital of North Staffordshire, confirmed with Legionnaires' disease who is in a critical but stable condition."