A patient at Overlake Medical Center was recently diagnosed with Legionella pneumonia.

“Immediately following the diagnosis, Overlake Medical Center took steps to minimize the likelihood of further exposure to potential sources,” according to a media statement from Overlake. “This included shutting down, testing and sterilizing ice machines/water sources on the units where the patient had been. We also took 13 water samples from different locations including from city sources coming into the building.”

Lab results from those tests are expected to be complete in 10 days. Enhanced surveillance of patients is also currently underway.

The patient with Legionella is now doing well and his health has significantly improved, according to the statement. Currently, there are no other cases identified at Overlake.

Legionellosis is a respiratory disease caused by Legionella bacteria. Sometimes the bacteria cause a serious type of pneumonia (lung infection) called Legionnaires’ disease, according to the Centers for Disease Control and Prevenition. The bacteria can also cause a less serious infection called Pontiac fever that has symptoms similar to a mild case of the flu.

However, most healthy people do not get sick after exposure to Legionella, which is only spread by breathing small droplets of water that contain the organism, Overlake health officials said.

“Overlake Medical Center’s first priority is the safety and care of our patients and we wish the patient a speedy recovery,” the statement continued.