Inmate at Stateville Correctional Center treated for Legionnaires’ disease

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CREST HILL, Ill. -- One inmate from Stateville Correctional Center in Crest Hill, Ill., is being treated for Legionnaire's disease at a hospital.

Prison officials saying this is not an outbreak. The inmate's cell mate tested negative.

Officials say at this point, no one else at Stateville Correctional Center is showing symptoms.

Legionnaires'disease can have a 2- to 10-day incubation period. It's treatable in most cases.

The disease is caused by legionella bacteria and is spread by inhaling water mist from contaminated sources such as air conditioning units or hot water tanks. It is not spread from person to person.