Legionnaires' disease cases associated with stays at Wynn Las Vegas

Key Points:

• The Southern Nevada Health District (SNHD) is investigating two travel-associated Legionnaires’ disease cases linked to stays at the Wynn Las Vegas in September 2025 and February 2026; both individuals have recovered.
• Environmental testing at the Wynn confirmed Legionella bacteria in the water systems, prompting immediate remediation efforts, with recent tests showing no detectable bacteria levels.
• The Wynn is cooperating with health authorities, conducting follow-up testing, informing guests of potential exposure, and urging all guests staying at the resort from September 1, 2025, onward to complete a confidential illness survey.
• Legionnaires' disease is a serious pneumonia caused by inhaling water droplets contaminated with Legionella bacteria, with symptoms including cough, fever, muscle aches, and shortness of breath, typically appearing 2-10 days after exposure.
• People at higher risk include those over 50, smokers, individuals with chronic lung disease or weakened immune systems, and those with underlying health conditions; prompt medical treatment with antibiotics is essential for recovery.