NILES, Ill. — Two cases of Legionnaires’ disease have been linked to a LA Fitness in Niles.

On May 5, the Illinois Department of Public Health (IDPH) began an investigation. The department said both individuals used the pool, steam room, hot tub and showers during the last few weeks of April.

After they were notified, LA Fitness closed their pool, spa, showers and steam room.

An environmental investigation was conducted and on Tuesday, results confirmed Legionella pnemophila S2-14 was detected in samples collected from the facility’s hot tub.

The hot tub and associated area will remain closed until additional testing confirms that legionella is no longer detected, IDPH said.

A manager told WGN-TV News they aren’t concerned with any contamination of other parts of the facility and they are still open for members.

People who work out at the gym said they were concerned to hear about the disease and said they will take extra precautions going forward.

“It’s generally a clean environment,” Alita Arnold said. “There are a lot of spray bottles with antiseptic spray and wipes around. We as the users just have to use them and be really conscience about wiping things down and hand washing.”

Arthur Merar spends a lot of time at the gym and said he uses the steam room after workouts.

“I mean it happens,” Merar said. “The staff members were very good. They shut down all the spa areas right away. They’ve been cleaning them every day.”