LA Fitness, Irvine, CA, has remained in contact with health officials in DuPage County, IL, following two reported cases of Legionnaires' disease that have been linked to its club in Naperville, IL.

Two male members of the club contracted the disease toward the end of October, a spokesman for the DuPage County Health Department told the Chicago Tribune. The spokesman said both men were "medically stable" but did not elaborate on their condition.

Health officials closed the club's hot tub on Oct. 23 after identifying it as the area from which the men contracted the disease, the newspaper reported. The rest of the club remains open.

LA Fitness has retained Nalco, an Ecolab company, to conduct a cleaning and testing of the affected area, says Jill Greuling, executive vice president of operations for LA Fitness.

"We have worked closely withthe DuPage County Health Department to identify the impacted area, which is limited to the spa in our club," Greuling told Club Industry this afternoon. "We will continue to work diligently to protect the health and safety of our members and employees."

In June, three members of a 24 Hour Fitness in Memphis, TN, contracted Legionnaires' disease. The following month, one of the three members sued 24 Hour Fitness for $2 million.

In 2009, a woman in Orlando, FL, sued LA Fitness after she and two other members contracted Legionnaires' disease in one of its clubs there the previous year.