“You can get Legionnaire’s disease at any time of the year, but more cases are usually found in the summer and early fall. While Legionnaires‘ disease can be very serious, most cases can be treated successfully. The Legionella pneumophila bacteria can also cause a less severe, flu-like condition known as Pontiac fever. Legionnaires’ disease typically affects people older than 45, especially if they smoke or have a long-term lung disease such as asthma. ”

Michigan Medicine University of Michigan