A US hotel at the Lac Vieux Desert Resort and Casino in Watersmeet remains closed after the discovery of the bacteria that causes Legionnaires’ disease, a type of pneumonia.

The casino, near the Wisconsin border, is operated by the Lac Vieux Desert Band of Lake Superior Chippewa. The casino and restaurant are open.

In a statement, the hotel said it won’t reopen until the remediation effort is complete. It is reported that one guest became sick.

The bacteria live in the environment and thrive in warm water. Guests can get sick if they inhale mist or vapor from contaminated water systems, hot tubs and cooling systems.