Mount Carmel Grove City (Ohio) hospital confirmed two more cases of Legionnaires' disease, bringing the total number of cases reported at the facility since it opened last month to 10.
As of June 3, the hospital had reported eight cases of the disease, of which one patient had died.
Patients may have been exposed to the disease during their stays at the hospital between April 27 and May 24, according to The Columbus Dispatch.
The hospital is working with state and county health agencies to identify the source of the disease. Legionella bacteria can grow and spread in complex man-made water systems, such as s sinks and showerheads, which is when it becomes a health concern, according to the CDC.
Last weekend, the hospital performed a hyper-chlorination process, where high doses of chlorine are used to disinfect water systems, and flushing of its water system.