By Mary Kekatos Health Reporter For Dailymail.com
Published: 22:46 BST, 27 June 2019 | Updated: 22:46 BST, 27 June 2019
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A mysterious outbreak of Legionnaires' disease has been linked to a suburban Illinois hospital.
All four cases have been traced back to Advocate Christ Medical Center in Oak Lawn, the Illinois Department of Public Health (IDPH) said on Thursday.
Legionnaires' is a severe form of pneumonia caused by inhaling water droplets containing legionella bacteria and, when left untreated, can cause fatal neurological complications.
Health officials say that three of those infected are former patients and one is a hospital worker.
Two patients at Advocate Christ Medical Center (pictured) in Oak Lawn, Illinois, were diagnosed
