Hawaii health officials are investigating two Legionnaires' disease cases tied to a condo property on Kauai, which is bad news for anyone who has stayed there recently.

• Water testing at the Kauai villas found Legionella bacteria, the kind of germ that grows in building water systems like hot tubs and plumbing.
• Two visitors who stayed at the property got sick with Legionnaires' disease, and health officials are now looking at possible cases going back to January 2025.
• People catch it by breathing in water droplets carrying the bacteria, often through showers, not from other sick people.
• The health department says the general public isn't at risk, but anyone who stayed at the property and later had pneumonia-like symptoms should get checked and report it.
• The property has not been asked to close while the investigation continues.

Outlook: Health officials expect the investigation to stretch on as they review a long list of past guests and illnesses reported between 2025 and early 2026.