Legionella (Legionnaires' Disease and Pontiac Fever)

alert iconMany businesses are closed during the COVID-19 outbreak. Stagnant, or standing, water can cause conditions that increase risk for Legionella and other biofilm-associated bacteria. Learn about steps to take before re-opening your business and building.

What is Legionnaires’ disease?

Legionnaires’ (LEE-juh-nares) disease is a serious type of pneumonia (lung infection) caused by Legionella (LEE-juh-nell-a) bacteria. People can get sick when they breathe in small droplets of water or accidently swallow water containing Legionella into the lungs.