Vegas Hotel Linked to Legionnaires' Outbreak

Nevada health officials are investigating a Legionnaires' disease outbreak traced to the Wynn Las Vegas resort. Two separate guests contracted Legionnaires' disease after staying at the five-star property in September of last year and February of this year. Both individuals have since recovered.

Environmental testing by the Southern Nevada Health District detected Legionella bacteria, which causes Legionnaires', in multiple samples from the resort. The resort has since implemented effective sanitization measures for its water system, with recent tests showing no detectable bacteria levels in affected areas.

The resort is continuing its testing protocols and has notified guests who may have been exposed. Individuals who stayed at Wynn Las Vegas on or after September 1, 2025, are encouraged to complete a confidential illness survey, even if symptoms were mild or have resolved. The resort states that proactive steps were taken to ensure water quality and that ongoing testing confirms no current risk to guests.

Legionnaires' disease, a severe form of pneumonia, is contracted by inhaling mist containing Legionella bacteria and is not spread person-to-person. While most healthy individuals do not get sick, approximately 10% of those infected die from complications. Symptoms typically appear within 2-10 days after exposure and include cough, fever, and shortness of breath. The U.S. sees about 6,000 reported cases annually, with experts believing the true number is higher. Rising temperatures due to climate change are contributing to an increase in cases nationwide, with recent outbreaks also reported in New York and North Carolina.