Legionnaires’ disease and air conditioning: A risk you probably didn’t know about

Legionnaires’ disease, a severe pneumonia caused by Legionella bacteria, thrives in stagnant water within large air conditioning systems. The disease spreads through contaminated water droplets, leading to symptoms like fever, cough, and shortness of breath. Prevention relies on regular AC maintenance, water system flushing, and biocide treatments, especially in hotels and public buildings.