Health officials are investigating two cases of Legionnaires' disease among patients at University of Chicago Medical Center, reports the Chicago Sun-Times.
Four things to know:
1. State and city health officials visited the hospital this week to investigate the source of the outbreak.
2. Water testing did not show signs of Legionella bacteria in the facility's water supply, a UCMC spokesperson told the Sun-Times.
3. Health officials noted the infected patients were also treated at other hospitals, which could be where they contracted the disease.
4. The news comes about a week after health officials confirmed two Legionnaires' cases at Mercy Hospital in Chicago. Both facilities said they are supporting ongoing investigations into the infections.
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