Legionellosis (Legionnaires’ Disease) – Pontiac Fever

Report within 24 hours of Diagnosis to the Local Health Department.

Legionellosis is an illness caused by infection with bacteria. It can cause two types of illness, Legionnaires’ disease (the more severe form which includes pneumonia) and Pontiac fever (the milder form and without pneumonia). The bacteria are found in the environment such as creeks, ponds, hot and cold water systems (especially hot water tanks), air conditioning, cooling towers, decorative fountains, whirlpool spas, and soil. Symptoms usually include fever, chills, and cough. People usually get infected by breathing in small water droplets, mist or vapor from a contaminated water source. Legionellosis can be successfully be treated with antibiotics.

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Last Reviewed: 12/18/2018