Multiple Guests At Las Vegas Strip Hotel Diagnosed With Deadly Lung Disease
April 29, 2026
Two guests who stayed at the Wynn Las Vegas hotel and casino have been diagnosed with Legionnaires’ disease, according to the Southern Nevada Health District. The cases, reported on Tuesday (April 28), are linked to separate stays—one in September 2025 and the other in February 2026. Both individuals have since recovered.
Legionnaires’ disease is a severe type of pneumonia that is caused by inhaling water vapor contaminated with Legionella bacteria. The illness can be deadly, killing about one in 10 people who become infected. The bacteria thrive in warm and moist environments, such as hotel plumbing systems or cooling towers.
After learning about the two cases, health officials conducted environmental testing at the Wynn Las Vegas and found multiple water samples positive for Legionella. The Wynn hotel immediately began a comprehensive cleaning and remediation of its water system. Recent tests now show no detectable levels of the bacteria in the affected areas, and the hotel continues to conduct ongoing water safety checks.