Updated: November 14, 2013 7:41AM
Suburban Chicago authorities say an outbreak of Legionnaires’ disease has been traced to a Naperville gym hot tub.
DuPage County public health officials say the bacterium was found at an LA Fitness after two men became sick.
Health officials say both men are in stable condition after their illnesses were reported late last month.
The gym remains open, although the hot tub is closed for cleaning.
Health department officials say the gym is cooperating. The Associated Press left a message with the club.
Legionnaires’ disease is a bacterial infection that can cause deadly pneumonia. It doesn’t spread from person to person. Instead, people get it from inhaling contaminated mist or vapor. Tainted shower water, air conditioning systems or whirlpool spas are among the ways bacteria get in the air.